SCIENTIFIC ABSTRACT DUBININ, M. - DUBININ, M.M.

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December 31, 1967
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SCIENTIFIC ABSTRACT
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Xhim,*, 1941, T. 14, v. 7-8, s. go6.1913- DUDIVIVA me me Ocherednrp Zadachi Rekuperetsii Letuchikh Rest vor ite ley-Khim. Prom., 1946, S. 20-24. (Bovmestno S. H. S. Puzhey 1. B. A. 60 0* a *a ta A a all"W"CA4 LM641 44"444" 4,040" *4 1 - Soto" I u 04 a I AftIOUX"lik saw 46MI Sat 4" Ati a 0 's w a 0 * 0 0 0 IXW* too t "Offt- r-A - - A Mawom d ego as o0 a almwoods I& r4kdal 66 to No as aducbw. M. U. tit!w Ir. 19=1 'M so Cow -T. . .70j-4 4 - - - P. few. Ow. fri., ".for dig 190)(fim Ro")~-Tb* do ctaimck cwv .*0 we &U dem*W by t1m eqntbw 2 - Of med. at d- goo cO odamcwd wavw In the Hgam $Mc 1010 wbea 0 fil md the oftawim Im%K= g( " I Off is bad- P" hat6malemberl" = Ow - we Woo. 0 m be *td. &am a - . &..-- -- dw w4aft, amoctwo or dw avammy kW 4* a twed no. of "PC" Nut k" to itoo vWww A aw adkd at cakig. 0 is -cgeaM ttau& 7% patwbawky of - varks dowly .%* (a k$A viom.) " am M*r %xid. M of do ad"bux loose to the Uqidd vAeg. Tkai6xv 0 - WK. w QI 0 we" &td. by W"g aw expdan W. vAdbw ad prS 11,44-. s 00 o M(wim mod Znvrim (C.A. St. W) mA eastouvd wftb 0641 Vdam CMVL by cwb at the awtbaft bulicated. U& mcpstal MAW k.qd. ady t"Lay avamok due @Ad .00 memo to d" ccom w0. wvomvu tku aw C' the ro 0 4tw metholo. lu ""a me: C41f* C4011, fto CJI,* W4 t St CUCIP. CCI" W43. utelt. It 40. m"W, m goo a. Ctak 400 see 21 woo L a "Irakku" kL Ufte, I tell it It 19 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4, 0 0 01* 0 0 0 a 0 0 0 0 0 0 0 0 0 0 0 0 * * 0 a a I tfLo ~i- ~iltl it a 0 0-0 w 0 w -0- 0-0 0CS, A 0 0 0 asee 0 0 * 0 & 0 0 0 a 0 0 & a A F- #MS -4 1 so**" -40 4 ~ % % v us a I ; - - - : -00,000000 GOVO-f -via a *'a 0 6'O-0 tw (*two I "VW" a 0 60. rag - wig w Cub= u In ft" < b"Um No 'C = we 1. i to amWcd. 'Amcb4ftered 0.1 ~. me. COO -C < r oo a adlaftbON !' goo 64(aw, I I coo : MGM. :00 goo T W. -Iwo* 99404, w 4~ Ali ,a& seed* *ifiwota 0 2 1 0 0 0 0 O-(~ 0 0-0 0 6 a a a j A in Lf IV kA V-A AIO ad a on goo 14 W*KA. Ias* 00 etmdde*NL & S. 4L as* 6*0 goo goo 46 wo (ile go wee wee CONSCAL WIRATWI ctaturcam* 41- see 4 OW, lt~ 41 , is i, &L 4-1-1-1 u is o iN/MmisU7 - Adsarptlm Tot *7 - Mm"a, Activated UMOU"My Miaracteristio Curve 3quatlon for Active Char- Sd X. m. Dabinin, Mm, Aced Sol USSR; L. V. loh, Lab Sorption Processes, Inat Phys Chms Sol USSR, 3 PP ~ 7:d, Acad Sol" Vol LV, No 4, PP 327-j19. Ian of adsorption potential to distance from I * of adsorbent can be deduced an&l:ytlc*3U lz 10 9 moss, and cannot be used for industrial ad- to vhloh are pwous bodies of ocuiplex struo- PaLmIle themy sumsests- use or characterls- ourve of adsorbout. Authare attampt to desalbs, I - ? ammes b7 a v*U-famAsd "nation, In owe V bodies, active Wm%mlm. ftb- Dec 3.946. 9 Jun 194T Adiorption Obarooal - Activation "Adsorption of Water Vapors wA the Struoture of Ac- tivated Charooelo" M. M. VOInin, Academician; Ye. D. Zaverina, Chea Varfare Acad, That Phys Chas, 4 pp 'vDok Ak,Md Sauk WM, Nova Ser* Vol LVI, No 7 Discusses experimental data,, illustrated vith graph,, and explains-th- bl-shift-of alsorption branches into rism-df-h'Ab relative pressures, vith progressive activation of charcoal and reverse effect in formation of acid surface oxides. 6OT96 ~es A f7f _i I . 1. 1---. . ~ . -. - 8469 e't' "Imi -WINOM amir M. ad ID6 F. IN0*6r. it lee a the vtpr Is km ant. ((a GIOL) v4 " MW 9 The ad. Q. d do adudw^ dift 00 A -a Mm) Un I dmMmurime fW V4 tho I Z2 in*=, ad go mW$bWv#a___ Vow xpft a# the thol fflactka 0 am be caw tka Idea is Kt lo aw Od to SAWari aw Or/v) A , 00 and a bow a dIqu =wtli WP At Va. A 0, 4 41A P,W b a NOL _VI so a I a a , , O"W 699"04-tift Is WAmdest. th" is a 00 GAL 0!8% 0 1 a I (b =rp/se). a um A was *mg. The ad.. cog its W4200 am 0090 4f we .%o 00., 6W '7. rath"ap. 1=0 a salartleml. Th.. = "". J. J. 40 %al #p obtaiIsed bawea :m jiANv= ftsUL "(& Ud 41 dm M. Of1do sqWW dWafte (s* bm 14 Md ciff so tome" Wen Ox'MMUMV1 hM do pvk%Gft 40 lee -Pam was .44 11 14 cl 0 0 o 0 o 0 we 6.0 *a 0000160:00 &SO 0 Soso sees.vs$m, of 966069999 00:4,u M. M. 444 Chailstry AdsorptUa, by Active' CaAM "Problem or the WattlAtion of Vapor Adsorption TAo- therms of Activai Carbons," Madeadolan M. M. Dablala, D. P. TlaofaysTs A PP "Dok Ak Naut SM" Vol LIO No % pp 821-4. PrasanU method that is Independent of tmparsture characteristic curves ror varlaus vapars and also independent of afflnltq cha;aotarlstla curves of in- dIvIdual vapors during conatant eAsorption. Submit 15 mer 1948. PA 3/4977 IjSSR/ChGM1Str7 -Carbon, P-4-tITO Jul Chemlstry - Sorption, Of Water Vapor QStudjv of the Sorption of Water Upors in Active Corbon,," Mad M. M. Dubininje. D. Zaverina, 31 PP ODok Ak Nauk SSW* Vol Ulp No 1 * PP 7942. Report of empertments. ksh-frae carbon activated by sorption of vwelous,lamounta of ben2ene or dibutylphtha- late. Soz;p't-lan and desorption leo~M6rma of vater vapor were then measured. Tabulates, plots, and d1scuasea results. Submitted 5 ~by 1948. I* DUBININ KIM, altadsolkl TAIWnTAT. D.?. Obsputation-of adqorptlex isotherms of vaporlike substances on activated obaro6al, Vokl. AN SSSR 60 no.5:821-824 My 148. . (Adsorption) (K= 1OS8) MMthepml try - Girbon - Aetive; Struatur* . Auj 48 Choml:try - Carbonj,' Active, Absentloa by a Structure and Sorption Proportion of Aotirc on From Menyl-Alclebyde Tars," Acad M. M, D~binln, Ye. D. Zaverina, 4 pp '!Wk Ak Hault SSSR" Vol L11, No 6, PP 1053-6 Tbree sets of active carbons, prepared by treating VIth carbon di9xide carbon prepared from bakelits J" 850 - 1, XY)'j, vere tested for adsorption of eub- stances of varying molecular nizea from aqueous 801U, tionss,'etich as methylew blue and Congo red. Ra- suits were compared with those for adsorption of bezzene vapors at 200. For nuk-rimum adsorption, 35A9T6 MM/Chemistry - Carbon, Active, Aug 48 Structure (Contd) G~GDIMTIon at 850c) is recommended, wbieh produces ~upecially fine micropores. Submitted 23 Jun 48.. X> '-,-I C-G~ Ci- \0 CA GI-I C+ 1.0 \.n V-4 C~ \0 VI C+ U \J'L 011 C+ 0 IJI C+ I C+ C+ C+ C GIC114 Cil 10 Tq C+I 0 01? 0 -x a to n a As b As )7 N If a I, u u v 0 v v I A L.M- N CC-ft 14ja A, 4 C-A21j, A A 00 00 at (of text in 06 A; IL D. Zavrri"; J. Phm Ck*tjL 17 Sep .49 ~-V pr M-1004; 6 1114-8.-Mbo 1- This aructs describes tesU in *Mch a S660111 Of bitch' Min' C01M, ObIAILMOd 10 TUIOW CM&tW*S, Wtft subjectod to pro. Cressive medratim with carbon d6o" at a Waperstv" of UOT. Also kayeallgat" wu Uw kinetic of combmtku of reautow car - boom in uwir relation to dw camStSoms of oxtractios of cok*s. Anevalvationtsgivmottlimp, , KychRrwWr6mtksOfth*ob- talmd specien of each miles of earbomm actordIft to the swas- W mr#4 admorpolam d Ow moid" with varkm simed OvIlecuka. a The adowpim innitherms of bes"m vapors for all carba" 09 Were Moav!r!~ U a tamporature of ZOV to a *W Interval of --b-A Id W06on, vm4*40. The CammeciJam beftfou thG CkMP La"rac- two at acti" miam carbom Uk the proct" of proor&w.. (33) At 0 t i A StIALLMICIL tIVIIISIL4, CLIJINKAVPC* ot -OWb u Am A 0 0 0 0 0 0 q 40 '00 4*0 go* see No 0 Use :60 see 00 00 so 00 00,3 00%0 01 140 So 0 see SPO 0 too 40 0 Ao boo too I., T- 4, #A t t 41 100000 U 0!0 0 0 0 0 000 06 010 ooooooeooo*o-. UUM/CheaiaU7 Carbon -Taul Chemistry Absorption "Sorption and Structure of Active Carbona: In. Cbang* in the type of Porosity In Carbloi* and Scrptloal of Water Vapor," M. M. Dubia 7e. D. Zaverina, 14 pp Mhur Piz Ehim' Vol M=, go 1, PP 57-70. Studies curves of laothe=a of sorption and dosorptim of water vapors on carbon obtainoA; frcot a%pr, which contain various quantities 1~~' J~" adsorbed benzene vapara. Berealed that block 'lue'vith tanzene of most active parts of catty WAWA,, USM/Chemlatry - Carbon (Ccntd) surface leada- to displacement of Ocrition ieotherma Into field of high relative prcvff= &Irzilar to tbat observed, during FrO9r0BaiT* carbon Activation. These results ccwreapimd 7', to tnothasis. on nature of water vapor D=ptl ui,rvs Deven graphs and ton tables Of OX90ri- 1. mental results. Submitted 19 May 48. 7 VOSR/Chadstry Ads6r9tion Apr beg Cbmistry - Carbon "Sorption and the Structure of Active Carbons: IV, Structwe and Sorption. Properties of Active Carbon Obtal d From Phenol-A3.dehyde Resins," M. M. Dabinin, Ye. D. Zaverina, Dept of Cbem Scil Acad Sci UM, Moscow, 141 Pp "Zhur Piz ]Mdm" Vol So % PP 469-83. Studied progressive activation of coke from pbe=3- fonaldehyde realms by C02 at 750-10000 C. Zvalmted character of porosity of the carbon obUlmd by of the adsorption of 57A9TIO UM/amistry 3datoption (Contd) Apr 149 dU#Olvad m%teriaIs with molecees of various sit". Submitted 4 Yhl 48. 57A9Tio DUBLINUIP - "Sorption and Structure of Activated Carbon. V. Activated Carbon from Resinous Charcoal.," Zhur. fiz. khim., 23, No.O. 1949 W ud" cwhem. M. 1,L. min, K. 11. zelmd", GW D. P. TIMMICOWS. ZUK - WAS-A". 23, 112"(190); d. C.A. 44, W-Expd. WA of the Previews Show that thm am 3 main tim of &4-. =too : (1) carboas having wr WWII porn. as cadwas to wbkk The wt. km* is Ins than W"; beir ad Im ImIkem la We 0 (We t.1fili 116 The =gm . ftleortmed P. The Zu. !NXI.W _P"~ . PW PC""" c mw 44 a* coast., an - r."-- ~ to Oemp.),; carboas having no ZZU pores, vxb " twtvm ob2idws wt. Jos of tow than 76ro or non- iblif e - M - X liv Is jwupottknial to - t (3) to type; Its WAkwm 14 the rAm of DMIM-11% Iva Chmistry A ej~ "Strzatural Types of Active Carbon@ Acad M. M. 3)ab-q,,' ,Yo. D. Mierina, 4 Pp *Dok Ak Nauk ssSR" Vol LXV, No 3F pp 295-8 ConsiOrs adsorption potential as a func~, ,on of carbon structure. Massif Is's structural types of active oarbone by characteristic curves. ExUbllaies tvo limiting struotural types Of active carbons. 71rat type corre- spondA to carbons moderately activated to charring not exceeding 50~,. and second to 39/49T9 (Contd) mr 49 6~bons ful3,v activated to abarring not exceeding 75%- submitted 25 Jan 49. 39/74M 00 .21 ITI c M&O"mm 99 M%Wv IWIRMSE &film and a# dtrAlmm~& A# ON bl"Ims. m u V vatAlft K I- -06 at", 0. Akbvv;F~~xwl I , 8-34m. 4% Iff" 1"9 , r" " I f1l VW"(Cf ),a*dm= )*mz"m3gTxu(,j Sb .00 -00 j -0 N 44. 101M. WRA Gtjjdkd 00 0. cutbom With COO to 69alrat dc'm of km at wt.. (al "d (1) 3%. Is the Order Y. 6. 0`46 kt.. Wk 1 2 14 , a** C. Odf 1. , S _ (q q I d t 00.) n w of . C ammid Was not em i swrAml OftwiWO Was A thim, aft . Oub.0 0 1 44 vid 0 44 m .1 U on C. O.W .1 0. : 0 Go's 1, reap. hrx.. the W ; ~ It" kill mvwwd an f aad on 4 wtt tot it =I, - Undo-On. Mijj~j (pn see l s s (011.10.1.1 SWOAI. Atterl6m.lbeficamwerr. o i 1.07, OAO# and OAI. = Mo 0.41, and OM ( eve wd Old"). ohm them sommi doubt as to wbn*r uW 8, 46(si"d dtar to yn, at , tmp. ('u, . "464M 141001101401 -08MVed u i l i ., s. wt. e mat e in p Wh" dia umples - mmitiomay kcpt 4( 1W. for M** (COOK 0 =0 6-t them I , or. at mus on thils is me futher champ at the * () d ! l 7 see an g. do 2 Walt, Kim 16 hm, QA2, 0, W, %I osi6 -Nd am sterW 0 t is goo . tar O , a 41, OM, and VAA (Olud a". 7U m"rmd 11W. 1, McCaw mv*i we , Obswv*i GO J AMC 16 Yn. at mvm ("op.. does 400 g"tkKdJMdW&*oejeMftda" N= . a 4 -- --'X. zz At GOV 40 am It I u a AN - It a AM A. I I OW 0 a a I A a .2 6 I Sa A I I W PO/Chesittry - Carbon, ActlVe sop 49 ;I., Adsorption the Structure and Adsorption Properties of Zinc- blorlde Activated Carbona,- Acad M. M. DLbinin, 0. D., Zaverina, 4 Pp Dok Ak Wauk SSSR" Vol LWIII, No 1, 91-4. Z vith method of activation by gaseous substances, od of obtaining active carbons by thermal decom- tion of organic materials in presence of Inorganic vating substances has obtained vide usage. Using chloride is inorganic activating substance, led adsorptlon properties and structure of vated carbons of progressing activation, character 2/qon6 ilm/chemistry - Carbon, Active Sep 49 Adsorption (Contd) of poroolty of vhIch varied vithin vide limits. ,ftbaitted 2 Jul 49. a 8 C 9 er a 0 x L a to 0 py WJ P V 00 AJ* W A 10 AX V X 30 A 11 0 4 T W A-1 a a 1. d . f .-~ j k . .. 1 11 cm AV m n MUM* too oho At" clabool w1cos .wT.c4 Wbox V.t(ft..ts dots tv oft 'LJXKIOXNM aftq q1jM OiXjf" 1 * a 1 001 v a w 314 . - 4111 01 irpulls ale rfuiqio%p q) 1 4 ' UO(l -jpUj V)Vp PJJWJIJ PC Paj9D(JV.L '.IA099 Oqj ()k sea JP-, p3jr,%por jo %act() OAO j0). .14ap -tulitl)(KI I- - n d 11 .wig Ja uU211P /Aim wil jo viwapg 10 AtU3p2.IV ill) In sip-[ Alsss VION PtUamv Appira 'Aanz put 'aU . . wiff lift" IV 'IV (-f-)l ul) .'"asoul-olv. pum Odle *I-P9 gilts p SAIMPS"s rw 921PA-4 64114-py i 0- - 000 00- n 09 D Poe are 00 00 T", and7averin, Ye. D, IlAdoorntion and Structure of Adsorbc.;nts,ft -i -7if- ev of the Depart?%ent of Cherical Sciences,, Vestnik Acad. Sci., 315C an Tilis was of particular interest to scientists at the nst.) eonj. Acad. Sci uho at the present time are studying local natural adsorbcmts (Lentonite clays). "Soviet Chemistry in the Stalin Epoch (In Honor of I. V. Stalin's 70th Birthday)," Uspekhl Khim., 19, No. 1, 1950. Moscow, -c1950-. aA v ~s 16 %W 01, M.M. zwbo S. 1. veravo, A. #A- di L : I Kbio". It. 1-61, W-6; . Robiwo = .~P. % '" Im Id V. i.- -W vl~ 9w. I Old *Now* 40 itIl" aft" Vill. 0=0144 alto" O"W" be *aft =-- FA. M- lj*t4.vAa liki 04"ft ). Aw. Uvmm M--w ,,Ww 34 d C A 440 U199 UW x t mm" (I absif -::C'~ rW.A-.R E.5 pub! a witr3 k Ha ft" (f Pam) 61 Ifi- wrAt" tO and thr" with "PI sAwbod b"sm Ot the i"Ahrm W a ft t. - VjWg(j%Jpjp (cf. C.A. 44. lum) ws imma so r "me km Omm 0.4. to CVfding P IL, IMA 0 F WIS 6"Itet Itojur I* tbmil of on ads f as cOwt 0 tbn;l = ml(~ i. ZW-- p is Cos. Homm-f- yjrid (2&-36%1, ME: "by :rwtd'v z.c I. I-. - I.. 15 thm" that ebtabod ja adintim by C(h. Aed"110" OW P" shod mmtk*l "Suits. The with w" LN-14 at gwo Wde SwIler. of c who, butios Wwfdw with Ob t bated with ZoCU yielded C the t t F was 0.& c4 do Ud tyW Iom f .3. or The Td. of am d'or W4 tri" cw F ((QWT 'cl 4.g., 1:001 In" 0 to 6. Vc bimb CMZ- r of pboli r os to L "=ty. W d- nd ftow KP A~~ , I ift Rd V-dy abold"d tool. a gmt the an to tonow wwdft abo. , ) - Im"a uptim Md IN ct - 4t "dom Oubm. 11. Admeoft W pM dmoab. M. M. Dvb&b *x4 2. D. =rd, fifti. u""WIt. am. IiI.11=6 (- 84,'11110-72MM01; Col. CU. 'A 1111111M.-TI110 ,111,1141 ~N .TMOMS! a Wohl its I -a I c 'c!)JIM (1) W H - W* cap (-Jodl/p were deriva c uW) from Pokuyi's thovery and vertW C.A. 42. 632. AN*; Uombed am chucals cd th-tv -li-14- air we-und tylpe (i.e. ~6ilh virktively dmL%w atk. Pon ). "W aymbau mor" -, 14' am It', AVA its limiting traw (cc./C.): 0 Z~ ttur vca. d.W. Me staaolard submancor. brattinch 8 the pw*4w distsitiotOon; a - the Amt, Adeowbad ma-4.); 0/0. - 'be rd&tivv l"emel 0 :4 /M TW. of tb*= arou I Wairt Is (a V"Y the Palm- The aim ud Ir the -kon of go- (abc- do cfit tbe=T far the am ;Wa- y4's-doomy(C.A. 14, 24M) MW thus vii'vol in-adoi to dim. the soollowpotions low 4 Al I' till plo I'l I .. .6 rp"I auto (witit.) dold 6 the V,411 flort %,44k I fmil. The g&2 ThotmM Is itthytrite. foot wheh J, - *.;'.I - 4,11. A471,1," In vvwAiuved at 20% hetween I and *11) tum. on 12 h., 3 7yins, sclivalrof lqzri~ 111VVICIrtits in coth. F4,10,11 11116"t (3). W. anti omn= .111"i"In Mclvrc &-ed - H - Mh-d#J 1:1 x 110 P0431~whroor R - kIg ( W11/6) 0) 4114 F - 0.115 k I '.~ 0# 111 L I ItoP A4- Morptim Wootherns (3) is verifie'l by p1cotting the t-zptl. flat& in a log a. (k# 2.12 X ILO/p)f diagram: straight lints ate obolahted which fit the dAta betwev Ih avid p%; h - 1, 8. 10. MU. 75, tw 101) deproading an the chour4ml, p, - I(K) for nil FAMpkS, Iletilt"O WISIMplixi it Mot 111fallorr4l ill 211* OU fit* VdInt IM11114CIR in CWJCf tot 4141. 1$'# AM) It frOM CqWA6rJG M, Then. forum the value of 0 and from It - B!(2.IU Nis k to deid.; from It and (7) 0 for ttbv!e" is abuked The oraluom al 0 for the diffevert ftmpln ate I I%) around a taws value ILM. This to in -5 vvclnent with the th"WrInany "Id. Value toof (Pcmj I'L,.u.) - 0.40. where P is t he perwbur (C.A - 44, MIM). Frunt E, The Value 01 14'. is aho det4, WA cam- to K*# as detd. from benteone advaqotbna; the ratio = loom values for the diffe"!nt sampka awMateff between toothey wiole katits (+15%). The agirvoruwat with the theory is thus good but only seadquant.. owing to the ap- pecamulico" Involved In (3) and (41. M. itaud4n AdemPUes of 44"s by "tivo cubms. A4. M. Dummalm and H. D. /Lav*rinal. PAUdy Abod, AWY-fiff. 72. -Tbr equAtium #A the adaur"We hffi~ threat sWirable to arlittv cArtions of the lot ~*-*J type. ie. with rrt4tivtAy Ane makeopmetis. a - (111`6/0 . call, kit WO.) 11. wheft W I - limtkists vw, 4 the *dMisillion Ikker. v - MA. few. of the v_qWmrd and The ct a esp. I-4(#/ ft 1.40110 the m'.1114,11 mimarption Imormol a. wvtv tested by Has thavail k 1.01.4 1,41P)JO. article R till ( 9V I F N - k its i,tAttun 6 (lecived ous the &W,rc Adamp6m iwjttwftu witb the aid of lkftayi's (C.A. 14, 24:111) miatico, &1 WMAW COM-) OW 4 (W-Immirl - 4.37 r WS .4 r RNA r27#?f9 istd=fly, 3bett"'Oulk! "all. fail) of slanalaeato activation (Small maot &M). is (Ime admorp" of Call. srolelf Celle vagmat a#*. rVelft she graipwally drili. "Mo. 11, 11W c'. %_ 6 Mill, mk4l. I b-4.;g (/M& (IF0111111HOtIll. 11 ).1lWhlfrAliW.I 10"hellm Illml It" Cliff latmusi kid a - poo 12.12 x 1 /0)10. witha in madfininks/g. And in am. Its; it MWS m a~]O to 4(X) Ines. 114 (UPW Ut CC the =.). From the mots, P lot clift, MA a for Ceffl. the ty comelf. 0 (ratio of # of CIf. and of Cal I. &I equial is found - O.U. "is chorks satim(Aclucal with 0 ITPe - 0.49 r4fi-d. (nwit the j,4rwkt*. 11 J Cliff and 110 C4 C*I If. 'j ILI.. Methods of stud3ring the structure of bLig-hly dispersed and porous bodies; transactions of the corScrmce of June 25-29., 1951. QR 473-A6 1. Porosit,.r. 2. Adsorption. I. Dubinin, I-likhail l-Likhailovich, 1901 - ed. J" Mrtiti&tidli Of tfie- Adsorption of Bqazew vapoi -:Oa 'AatI4ite&-da;bon'Blackp". Acad M. M. Dubinin DIP f .*Wk Ak WgLuXISW Vol UCKVJ 555-558 nonpoirous cMnnel black Spheron Orade h L.tj"- U= at 1,0000, la- ex 09, -vac: Vat progres- 0 o' -,,at 9 'di 6 ve oxide by, 4 adtlyat ~5O..~ vith carbou 11-3,21-1, 55-lP s~A 'Adi shd"d that adiarptl6i -face of -20,t .$.Adiorptioa by pore Sur pordue, -Ciiiiony "teio Pe4~ ln~ addo to of-. 9d. -T! Alon (Contd)- 1 Ireb 51-1. Adsorp type Oy nonporous carbon) as result of activatiodp'' proving formation of porous structure. Yommovicy, redaktor; DUBINIS M.N., akedeaft. . rettaktor; KOZWY, T.Y., proremmor, rodaktor; PIWORtyrrr. professor, redaktor; BANKTITSIR, A.L., redaktor isdatel4stya; ~Axmijl. TOOT*, takhnicheakiy redaktor Duitrii Ivanovich Mendeleev-, his life and works] Duitrii Ivanorich Mendeleev; shisn' I tmdv. [Moskva] 1957. 254 p. (MLRA 10:2) 1. Akedemiya.nauk SSSR. Otdolenlye khinichaskikh nauk (Mendeleev, Dmitrii Ivanovich. 1834-1907) DUBININ M. ~L ==:=:=U- "Surface Properties and Pore Structure of Carbon Adsorbents" (Section 10) a paper submitted at Industrial Carbon and ewq*tft Conference, 24-26 SeP157, loondon. , &"tur C-3,800,117 L)ki In I" IN-) / I Y I -M - USM/Physical Chemistry - Surface Phenomena, Adsorption) Chmato- graphy.. lon Xnterch&W. B-13 Abe Jour: 'Referat. Zhurz,1111 jk' 2,11958.0, IOU. Author : M.1j.-MADID. inst :-Ka-idemy of Sciences of USSR. Title Letter to The Editor. Orig Pub: Izv. AN OR,, c+A. khin. n-P 19M No 3P 392. Abstract: Mie SwlicsbilitY of the isotherm equation of Dabinin and Pjtftsbkevich was established on-the basis of a careful experi- mmtal determination of adsorption isotherms Of C06 vapors at 200 and Of 92 at -1950 on activated carbons (AC) of the lst structural type. This permits to apply the method of "mole- cular probes" to the experimental determlnation of the distri- bution of AC micropore volumes according to their dimen ions, if a set of substances with more or less globular molecules of various dimen ions was at hand, because the border volume Card 1/2 -15- ') t V: I ~,_; I vu h UWPhysical 6emistry - Mrface Phenomena, Adsorption, Chromato- graphy) Ion Int4rchange. B-13 Abs Jaur: Iteferat. 2birmal Mdmiya, Wo 2, 1958) 4015. Author :-M.M. Du:~iAlpl-Ye. D. Zaverinap D.P. Timofeyev. Inst : Academy of Sciences of USSR. Title :Adsorption Properties of Carbon Adsorbers. Report 1. Amalysis of Earlier Obtained Experimental Data. Orig Pab: Izv.AN SSSR, Otd. khIa. n.., 1957p No 6., 670-6TT. Abstract: adsorption data referring to 12 different sub- stances on two activated carbon specimens were analTzed in detail and a good conformity with the e3Werlence vitb the earlier developed potential theory of vapor adsorption on adsor- bers with heterogeneous surface was shown. The part of the car- bon structure in the adsorption process was made clear and it was shown that in the case of well adsorbed vapors (activity factor (J~-1.5), the degree of filling (F) of the rdcropore Card 1/2 _19- UM/Physical Ch~Ltry Surface Phenomena., Adsorptiony Chronato- graphy, Ion Interchange. B-13. Abs Jour: Referat. Zhurnal Rhimiya, No 2., 1958, 4ol4. Author B.P. Bering, M.M. Dubinin, Ye. G. Zbukovskaya, A.I. Sakharor, V-V. Serpinskly---- Inst Title Study of Porous Structure of Solid Bodies by Sorption Methods. III. Gravimetric Methods of Measuring Sorption and Desorption Isotherms of Nitrogen and Benzene Vapors. Orig Pub: Zh- fiz. 1rhimli, 1957, 31, No 3, 712-716. Abstract: With a view to select and substantiate the most rational methods of measuring Isotherms of vapor sorption (IS) on solid bocUes, an improved vacum installation vas constructed; this inst&Ua- tion permits reliably to take down the IS of N2 at a low teape- rature and the IS of benzene vapors at the room temperature by the gmvimetric method. The IS-s determined with the described Card 1/2 -17- , 'DMWphysical Chemistry - aarface Phenowns., Adsorption, Mzvmto- gmphy, Ion Interchange. B-13 Abs Jour: Refexat. Murnal Miimiy&,No 2, 1958, WA. insta.Uation for N2 at -1950 on silica gel and for benzene va.pore at 2DO on a"Iyated carbon coincided precticLUv with corresponding IS-s taken dovn by the valumetric 02) or gravi- metric methods by other authors on other installations. (See Part II in FMMlimp 195TP 26362.) Card : 2/2 -18- lJoglIll"I",0lt'~ /" DUBININ. M.K.t ZHUX, G.S.; ZATMINA, Ts.D. Studies on the porouB structure of solids by adsorption methods. Phrt 4r On the relation between various types of pores in active carbon [with summary in IMIIsh]. Shur. fis. khtm. 31 no.5rll26- 1135 Mr 157. (MIR& lotil) 1. rnatitut fisichakoy khinii AN SSSR. (Carbon, Activated) (Adsorption) ef h 1"41 1 -C~ 4r/. -0/, USSWPhysical Chemistry - Surface Phenomew, Adsorption, Chrowato- gm]*yp Ion Interchange. B-13 Abs Jour: Referat. Zhurnal FbIalyao No 2,, 1958,, 3995- Author B.N. Vasillyevp B.P. Beringp N.M. Dubinin, V.V. Serpinskiy- Inat Acadeqr of Sciences of USSR, Title Study of Adsorption Under High Pressure. Orig Pub: Dokl- AN SSSRp 1957, 1141 No l.- 131-134- Abstract: The COp adsorption on two silica gel specimens in the range from --85 to +400 and under the presm2re of from 0 to 85 atm was studied using the instrument described earlier (FMhXhim, 1957p T4T86). The adsoqtion hys&eresis loop is observed only inothe range from -W to -2D . The isotherms of -30 and -50 bring to a not coinciding distribution of pore volumes according to their radii. The total substance cmtent a differs noticeably under high pressures from Gibbs' adsorption. It is shown that the mean density % of C02 in the adsorbed state Card V2 -5- USSR/Physical Chemistry - Surface Phananena, Adoorptionj, Chromato- graphy, Ion Interchas, . B-13 Abs Jour: Referat. Zhurnal Rhimlys, lo 2, 1958, 3995. is greater than the density of a normal liquid (for exe le, by 14% at 250). The dwaacteristic curves of the potential adsorption theory depend somewbat an the teaWeratum near ter (0 and 250). At the computation of these curves by VV and I w only one and the saw curve is obtained for all the tem- pearatures including 0 and 250. The breaking point observed on the adsorption Isosters; is explained as an indtastion of a phase transition Of C02 in adsorbed state - "two-dimensional crystal- lization analogue." The capillarily condensed substance in the soTion space is in the state of supercooled liquid down to -85r . Card 2/2 -6- WKW1911CH) Vs 149) E1T11r-111,-M.-14 ., LSONVUN, Ye. A., SARACHOV, A. I. "Examination of the Porous Structure of Activated Charcoals." Paper submitted for presentation at Fourth Int'l Conference an Electron Microscopy, Berlinp GFR, 10-17 Sep 58. Institute for Physical Chemistry, USSR Acad. Sci. Moscow. C-3,800,829, 25 Jul 56- J, ' - ,. , ,-- - "iE'S1'S"H'V'1"U" G. V'.; )MWOLMO, 0 F., If "The.adsorption from vapors and Uq7.lids. report presented at the rourth All-Unicm Cmforews an Colloidal Cbsuletry, Tbilisi, Georgian 3W, 12-16 May 19% (Yoll ibix, 20,5, P..6-77-9, 158, Taubman, A.B) DBININ,#A., skad..oty. red.: RAZUKOVA, L.Le, red. Ird-va,; MARKOVICH. S*M., tekhn. red. [Methods of studying the structure of highly-dispersed and porous materials; proceedings iDf the conforencej Metody iseledovanie etruktury vysokodisporenykh i porietykh tel; trudy soveshchaniia. Moslcva, Izd-vo Akad. nauk SSSR. 1958. 294 p . (KIRA 11:12) 1. Soveahchaniye po metodam issledovaniya struktury vysokodisperenykh i poristykh tel. 2d. Leningrad. 1956. (Porosity) (Ad lorptidn) (00%*blds) AUTHORS: Dubinin, M. X., Zhukovskaya, Ye. G. 62-58-5-2/27 TITLE: On the Adsorption-Propertiea of the Carbon-Adsorbents (0b adsorbtsionnykh evoyetvakh uglerodnykh adsorbentov) Communication 2: Investigation of the Adsorption-Propertiee of Active Coals by Benzene-and Nitrogen-Vapors (Soobehoheniye 2. Iseledovaniya adeorbtaionnykh evoystv aktivnykh ugley po param benzola i azota) PERIODICAL: Izvestiya Akademii Nauk SSSR Otdeleniye Xhimicheskikh Nauk, 1958, Nr 5# pp. 535 - 544 (UhSR) ABSTR"T: As is known, nitrogen-and benzene-vapors are used as standard substances for the investigation and classification' of the adsorption-properties of active coals. Up till now, a con- gruence of the adsorbing properties of active coals above nitrogen-and benzene-vapors has not yet been found, however. The purpose of this work is the investigation of this problem. The adsorbing properties of some samples of active coals above benzene-vapors at 2o C and nitrogen-vapors at -1950C were in- vestigated above all. It was found that in both cases the ad- Card 1/2 sorption depends on the dispersive interaction of the molecules On the Adsorption-Properties of the Carbon-Adsorbents. 62-58-5-2/27 Communication 2: Investigation of the Adaorption-Properties of Active Coals by Benezene-and Nitrogen-Vapors (of the vapors) with the surface of the active coals. The coefficient of affinity of the characteristic nitrogen-ourves was calculated. The fundamental causes of the difference of the adsorption-volumina. of nitrogen and benzene for the points of the beginning of the hysteresis of the isothermal lines of adsorption were analysed. More rational methods of volume- -determination of the micro-and transit-pores (perekhodnyye pory) of active coals were described and substantiated. The problem of the selection of a standardized vapor for the characteristic of the adsorption-properties of active coals was discussed. There are 4 figures, 6 tables and 21 references, 17 of which are Soviet. ASSOCIATION: -Institut fizichaskoy khimii Akademii nauk SSSR (Institute for Physical Chemistry AS USSR) SU13MITTED: March 13, 1957 L.Activated carbons--Adsorptive properties 2. Vapors--Adsorption Card 2/2 3. Benzene--Applicationir 4~ Nitrogen--Applications ADTHORS: Ka-'leta, 0., Dubinin, 11. E. SCV/6 2 -;, 0 - 9 - 3 /2 TITLE: Investigation of the Kinctics of t,e Thermal Dc-co..-,po3ition of Solid Materials (Iosledovaniye kinetiki razlozheniya tverdykh voohcheetv) Communication 1 T'. Thermal Decomposition of Lead Carbonate (Soobs-.cheniye 1. Termicheskoye razlozheniye uj;lekislo.-o ovintsa-) PERIODICAL: Izvestiya Akademii nau? SSSR. Otdeleniye khimichcckikh nau;:, 1958, lir 9, PP 1031 - 1036 (USSR.) A3STRACT: In the study of the kinetics of the thermal decomposition of solid materials two methods were employed: the gravi- metric method and the manometric method. Both methods, however, have deficiencies. The authors t"rierefore investigated the kinetics of the thermal decomposition of solid materials by weighing the Gaseous reaction products which were adsorbed onto cooled activated char- coal during the reaction. This method makes neastire7ent at reduced pressure possible, but care must 'Le taken to always maintain a good supply of heat throu~,hout the experiment. The decomposition of the lend carl-on.-Ao pro- Card 1/2 ceeds at a rate proportional to the sur~'ace area of the Investigation of the Kinetics of the Thermal S07/62----8-5-7/26 Decomposition of Solid Materials. Communication 1: T,ne Thermal De- composition of Lead Carbonate undecompoood material (without the auto-catalytic effect of a solid reaction product). The activation energy of the thermal decomposition of the lead carbonate and the factor of the exponential function were calculated. The activation energy was found to be 41 500 cal/nolo, while the magnitude of the exponential fac or V"'Is Cal- culated to be (0.5 � 0-5).1010 9-cm- ..Vec- . There are 4 figures, 1 table, and 4 referenceo, 1 of -.7rich is Soviet. ASSOCIATIOIN: Fiziko-matematicheskiy fal:ulltet Karlova universiteta v Pra.,-,e (Dept. of Physics and Mathematics of Charles Uni,,erzity, Fra_-ue) SUBMITTED: April 17s 1958 Card 2/2 AUTHORSt Nikolayevt K. M.9 Dubinin, bf. U. SOY/62-58-10-2/25 TITLE: The Adsorption Properties of the Carbcn Adsorbents (Ob adeorbtbionnykh svoystvakh uglerodnykh adsorbentov) Information 3,- Investigation of the Adsorption Isothermal Lines of Gases and Vapours on Activated Charcoal Within a Wide Temperature Range Including the Critical Range (Soobshcheniye 3- Issledovaniye izoterm adsorbtsii gazov i parov na aktivnykh uglyakh v shirokom intervale temperatur, vklyuchayushchem kriticheskuyu oblast') PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk, 1958, Nr 10, pp 116r--1174 (USSR) ABSTRACT: As only some of the data worked out in this field contributed to the solution of the problem of the physical adsorption of substances in gas or vapor phase on adsorbents of diverse porous structure, the authors of this paper investigated the wide, temperature range including the critical range with respect to the adsorption isothermal lines of nitrogen, krypton, xenon, tetrafluorethylene, and hexafluoropropylene on two types of activated charcoal that belong to the outer Card 1/3 members of the series of activated charcoal of the first The Adsorption Properties of the Carbon Adsorbents. sov/62-5e-10-2/25 Information 3.- Investigation of the Adsorption Isothermal Lines of Gases and Vapours on Activated Charcoal Within a Wide Temperature Range Including the Critical Range structural type. As a result of the analysis of the experimental data and the investigation of the properties of the state of the adsorbed substances within the range of critical temperatures the authors proposed rational methods of determining the characteristic adsorption isothermal lines of substances in vapor or gas phase. In agreement with the potential theory of adsorption the coefficients of the affinity of the characteristic curves do not depend on the carbon structure; the volumes of the adsorption space have to be regarded as constant quantities for each activated Charcoal if no ultra-porosity effect �s present. Equations for the adsorption isothermal lines for the vapor and gas state of the substance to be adsorbed in the phase of equilibrium. volum9s were proposed for the activated charcoal of the first structural type; these equations correspond to one and the same equation of the characteristic curve. Theae equations of the adsorption isothermal lines are Card 2/3 experimentally founded. There are 9 figures, 2 tables, and The Adsorption Properties of the Carbon Adsorbents. SOV/62-58-10-2125 Information 3-- Investigation of the Adsorption Isothermal Lines of Gases and Vapours on Activated Charcoal Within a Wide Temperature Range Including the Critical Range 23 references, 6 of which are Soviet. ASSOCIATION: Institut fizicheekoy khimii Akademii nauk SSSR (Institute of Physical Chemistry of the Academy of Sciences, USSR) SUBMITTEM May 179 1957 Card 3/3 WBrip, Ml~,~kadezlk A . The order of tha.day is the organization of the amteur-cheidets' movement. On. takh. 3 no.llzl-3 N '58- (MIRA 11:12) I (Chemists) 76-32-5-33/47 AUTHORS: Dubinin, M. M., Nikolayev, K. M., Sarakhov, A. I. TITLE: Using the a-Ionization Manometer iA Sorption Investigations (Primeneniye a-.ionizatsionnogo manometra v sorbtsionnykh icaledovaniyakh) PERIODICAL: Zhurnal fizicheskoy khimiiq 1958, Vol. 32, Nr 5, PP-1155-1159 (USSR) ABSTRACT: In order to avoid the many disadvantages of mercury manometers in measurements of sorption-investigations a variant of the a-ionization manometer was developed under collaboration of the Radium Institute of the AS USSR; this manometer was pro- duced and used in the present investigations. From the dia- grams and the description can be 3een that radium was used as radioactive source, which was laid in a thin layer on a plate-shaped base of gold, this production having been made by the RIAN of the USSR. The dimensions of the ionization chamber depended on the field of the pressure measurements, with two chambers present for a wide field of pressure Card 112 (1.1o,,4 to 1000 torr), one for high and another for low 76-32-5-33/47 Using the a-Ionization Manometer in Sorption Investigations pressures. A scheme of the amplifier plant which is an altera- tion of that described by Downing and Mellen (Ref 7) is also given. The d?qoribed manometer has a measuring sensitivity of 2.o . 10" A/ torr in the interval from 1.1o-2 to 150 - torr and is calibrated according to an Hg-manometer, with a measuring accuracy of a mean value of 1 - 2.% being achieved. The measurements carried out with nitrogenf~krypton xenon and tetrafluorethylene on coal showed, compared with measurements by means of Hg-manometers, a good applicability of the a-ionization manometer for investigations of adsorp- tion phenomena. The described manometer is an experimental apparatus and still has to be further developed. Finally the authors thank Professor V. M. Vdovenko and D. M. Ziv, as well as Ta. Yu. Rib. There are!6 figures and 11 references, 8 of which are Soviet. ASSOCIATION: Akademiya nauk SSSR,Inotitut fizicheskoy khinii Moskva (Moscow.Institute of Fhysic3 and C%cmiatry; j AS UY~R) SUBMITTED: -TulY*17v 1957 Card 2/2 Manometers--Design 2. Alphaparticles--Ionization effects 3. Ionization cha-mbers--Performance AUTHOR3 i nilhj 64AL Jd. M.F Sarakhovp A. I. f SC7/ 76-32-6-32/46 Ry a b i k 6'Iff-1w TITLN's Methods and Techniques of Physico.ohemical Inveatigations (Metody i tekhnika fiziko-khimicheakogo issledovaniya) A Low-Pressure Poremeter (Yoromer nizkogo davloniya) PERIODICAL: Zhurnal fizicheskoy khimii, 1958, Vol- .52, Nr 6, PP~ 1404-1406 (USSR) ABSTRACTs In order to make possible measurements of pore size in porous materials of 100 4 and less S. A. Semenova (Ref 3) designed an apparatus which, however, has several disadvantages. A poremeter is described which does not have these deficiencies any morel the possibility of investigation in secured at 5 - 1000 torr, i. e. at a pore radius offrom 5 to 100 P- A diagram of the apparatus is given as well as a description of the technique employed. It may be seen that the dilatometer was somehow changed by introducing a chromium-nickel wire, on the other hand the principle of measurement consists of the fact that mercury Card 1/3 enters the pores of the sample and that the experiments Methods and Techniques of Physicochemical SOV/ 76-32-6-32146 Investigation6. A Low-pressure Poremetor may be carried out within a wide pressure interval of from 30 - 50 torr. In the measurements it must be taken into consideration that also the in-between-spuce of the sample and of the ampoule is measuredl in order to obtain the real values of the porosity special experiments with model substances must be carried out. The dilatometer can be used for low-pressure- as well as for high-pressure-metere. For both measurements the same sample may be used. A diagram of the measurements carried out with the high- -pressure instrument of the PA-4 as compared to those of the described poremeter is given. rinally the authors thank V. V. Serpinskiy. There are 3 figures and 3 references, 3 of which are Soviet. ASSOCIATION: Akademiya nauk SSSR)Institut fizicheskoy khimiiMoskva (Moscow Physics. Institute .,AS USSR) SUBMITTEDt July 17, 1957 Card 2/3 Methods and Techniques of Physicochomical !'6-:32-6-32/46 Investigations. A Low-Preacure Foremeter 1. Materials-Porosity 2. Chemical analysis-Instrumentation Card 3/3 A 5(4) AUTHOPS: 1.16skvitirt, 11. N., Dubinin, M. 141., SOV/2o-122-5-26/56 Acaclem ician, SaraTTo-v,-1-.T-.----- TITLE: The Adsorption of Water Vapors on Crystalline Powders of Halogenides of Silver an(I Lead (Adcojbt::iya parov vody na kristallicheakikh jporoshkahh ~:%loZenidov serebra i svintsa) PERIODICAL: Doklady Akademii naul: SSSR, 1958, Vol 122, Nr 5, PP 840 - 843 (USSR) ABSTRACT: The present paper compares the isothermal linez of adsorption on the typical r-Dpresentatives of the crystal groups mentioned in the title for a sufficiently wide temDerature interval. T'ie isot-ermal lines of t-He ndsorztion of riater vapors were investiqated by meano of quartz microocales. Preparation of the '33r'ciits for the experi.,-.ients is discussed in :7hort. Work with A,,-,J and AgC1 was carried out red The weiC;1-it of the adsorbents amounted to from 0.75-0-8 U- The isothermal lines of the adcor,ntion of viator vFe--,c Card 1/4 measured at 20, 10, 0, and -200 on the crystals of AqJ The Adsorption of Wter Vapors on Crystalline Powderc SOV/2o-122-5-26/56 of HaloGenides of Silver and Lead n, nd A-Cl. All isothermal lines found in thic manner , (type II according to the cla3 -4-fIcation ',-.,y Drunauer) are reversible in the entire intorval of pre.r.surco and cire fully reproducible ~.t -.11 tomj)cratures. This ap;)lies no matter vihot.-ier tlc sanplo had been heated before measurement or not. Thc '.ieat efi*ect of the adsorotion of water has a vi.~Iue si.-Alar to a t, of conden-sation heat. The i!;othermal lines of the adsorotion of water on AgJ and ACCl are descriled In the ranCe of relative preosure~s of 0.05-0.4 by the equation of polymolocular ,doorption 6iven by Brunauer, Em~-ict, and Teller. 11ext, some characteristic features of the sorption of water on silver iodide and silver chloride are described. Particular interest io cati-led by Ue problem of the phare state of t".0 0 water adsorbed on A[;J -~nd A(,-Cl at temperatures below 0 Two diu~;rama show the ioogteric lines for variOU3 valuee of ad_-.orption on A,-J :ind ACC1; they -aerc calcul.,.ted Card 2/4 from t';'.O isothermal linen for the tomper-.tures 20, 10, 0 The Adsorption of Water Vapors on Crystalline Powders SOV/2o-122-5-26/56 of HaloE;enides of Silver and Lead 0 and -20 . All isosteric lines for AUJ concist of 2 linear parts, which intersect in a temperature in+erval no--- 00. The salient points of these curves co;respond to the molting of the iron. From the difference between the anGles of imlination the value 1450 kcal/mol is obtained for t',-.e heat effect of the transition. The isosteric lines of the adsorption of water va-)or3 on A-Cl have no slalient point. There- fore, the hent ef-,'ect of' the adoo1%,Aion at positive and nel,-ative temperatures is practically equal to the heat of condensation. In the zorption of water on PbJ2 a non-equilibrium system vapor adcorbent was in all caues concerned.There nre 4 fiGures and 13 reforences, 4 of which are Soviet. ASSOCIATION: Institut fizicheckoy khimii Akadomii nauk SSSR (In- stitute of Physical Chemi:3try of ti-e Academy of Sciences USSR) Card 3/4 is! 1 a ; I fill% .7 IL i pi I j Liz, v Vim qq!~.jj%ei p. 31 1-0 JOHN, a '--Tau. 21 -i ' I '9Z . it o. 11 .. .. 0 4 pul us ve Vil J%- jig, I lit! is 5 (4) UTHORS.- A Bering, 'B. P., DubigU M SOV/62-59-6-5/36 Serpinskiyj V*" V. TITUt Calculation of the Differential Heatsof Vapour Adsorption on Active Coal (Vychicloniye differontsiallnykh teplot adsorbtaii parov na aktivnykh uglyakh) PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk, 1959, Nr 6, pp 981-988 (U-SUR) ABSTRACT: Besides applying other methods, the differential adsorption heat may thermodynamically be calculated by means of amodelof OB Maoiltim interaction and the theory cf molecular forces. in a previous paper by the authcr (Ref 1) it was shown that according to the potential theory of adsorption the differential heat of an adsorption isotherm may be computed by the following equation: q ~m OLRT2 fol In h - RTlnh (1). Here q denotes the total, k- ) ,?1na T and q the pure differential adsorption beat, %the latont vaporization heat, otthe thermal coefficient of the spatial extension of the adsorbed substance, a the adsorption, and h-p/p . the relative pressure. The characteristic curves of the volume Card 1/3 distribution for inhomogeneous adsorption surfaces of different Calculation of the Differential Heatsof Vapour SOV/62-59-6-5/36 Adsorption on Active Coal type, in the present case active coal, on the adsorption range are known from publications. These curves lead to equations for the adsorption isotherms of different structural types. BT2 (lg h) 2 (Equations 4 and 5) a = "Yo e 62 M 4) v AT lg h Woo (II) W- Here Wo (Wo') B (A) denote structural v characteristics of the adeorbents, P the affinity coefficient, and v the mole volume. Based upon the equations 1 and 4, or 1 and 5, a term for the differential adsorption heat of vapour of different substances on active coal may be set up. For the purpose of facilitating the computation, this equation was established in variable 9 (of the filling degree of the micro- pores). By following this equation the differential adsorption heat at different numerical values 9 was computed for a number of substances on a standard adsorbent at different temperatures. Card 2/3 Active coal of the type (I) served as standard adsorbent. The Calculation of the Differential Heatsof Vapour SOV/62-59-6-5/36 Adsorption on Active Coal. values obtained for q are given in a table. A figure shows the dependence of q on 0 for normal heptane, hexane, and pentane. in an analogous manner the equation holding for the differential adsorption heat on coal of the second structural type was derived. For the first type computations of the adsorption heats of different hydrocarbons were carried out (Table 2). For this computation it was necessary for the two structural characteristica We, B (Wo', A) of the adsorbent, tabular values on the pressure of the saturated vapour, its mole volume, its parachor, and the thermal coefficient of the volume distribution of the substance to be adsorbed to be known. Finally, an approximative calculation method for the differential heat of the alkanes on adsorbents of the-first structural type was worked out. There are 1 figure, 2 tables, and 12 referencesq 10 of which are Soviet. ASSOCIATIONs Institut fizichaskoy khimii Akademii nauk SSSR (Institute of Physical Chemistry of the Academy of Sciences, USSR) SUBMITTED: October 24, 1957 Card 3/3 -5.4100 77059 GOV/62-59-12-3/43 AUTHORS: Moskvitinj N. N., Dubinini M.-M., Sarakhov, As 10 TITLE: Study of Adsorption of Water Vapors on Ionic Crystals. Communication I. Methods and Results of the Study of Water Vapor Adsorption on the Crystals of' Silver Iodide and Chloride PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimiche3kikh nauk, 1959, Nr 12, pp 2080-2087 (USSR) ABSTRACTt The authovs studied isotherms of adsorption and de- sorption of water vapor on crystals of silver chloride and iodide (which can be used as active centers in cloud seeding) for the temperature interval (+20 to -20'). Bering and serpinsIcty microbalance Z-B. P. Bering, V. V. Serpinskiy) Doklady Alcad. nauk SSSR, 94,, Nr 3. 497 (1954)_7 (sensitivity �2.5-1o-7 g) provided with a special adjustment to eliminate electrostatic effects CA_ I. Sarakhov, Doklady Akad. nauk SSSR, 112j r 3., 464 (1957)2, was used. Card 1/7 It allowed one to measure adsorption on 0.7-0.8 g 'Study of Adsorption of Water Vapors on Ionic 77059 10 Crystals. Communication I. Methods and Results 11/6-2-59-12-:~ of the Study of Water Vapor Adsorption on the Crystals of Silver Iodide and Chloride Damplea of adBorbents with the opecific surface of 0.015 2 Every sample was preheated on the balance pan atmllgO11200 for 8-10 hr to de3orb the substances adsorbed from the air. All manipulations of silver halides were performed under red light. The obtained isotherms are all of type Il of the Brunauer classi- fication (Figs. 1 and 2 show the adsorption isotherms for AgI). The adsorption Isotherms for both AgI and AgCl are reversible in the whole interval of measured relative pressures, except for the isotherms at -200., which are reversible only up to the pressure of vapor saturation at that temperature, I. e., 0.77 nim. Above that pressure, desorption points lie on the curve which is above the adsorption curve, both curves forming a hysteresis loop. Values for specific surface (S) of the powders and for the volume of' monomolecular layers ( aM) were calculated from the corrected Card 2/7 isotherms (curves 2) for 200, ;qh1ch were calculated MJ -1 -6.4 1-9 sov/62-59-12-3/43 lot too V 0 V 0 40 40 of P/Pj 0 Fig. 1. Isotherms of Water vapor adsorption on silver Iodide at 20, 10, and 0 0 . In the upper left the beginning sec- tion of the 200 isotherm is 3hovm on a large scale. Card 3/7 4s 4j 46 1 P/P$ 77059 77059 sov/62-59-12-3/43 'P"WV Card 4/7 Fig. 2. Isotherm of water vapor adsorption on the crystals of silver iodide at -200. from the linear equation of the multimolecular adsorption2theory. For AgCl, a m = 0.54 4 moles/91 S2= 0.08 m /gj for AgI, am = 1.32 ~L moles/g, S = 0.2 m A. Adsorption isotereoof AgI build for the values of a (a = adsorption) from 1.5 to 3-0 4, moles/ A (see Fig. 5), and show an inflection at 00, in- dicating phase transition at that temperature. The C difference in slopes of both linear sections of the curves determines heats of transition (fusion of ice), Study of Adsorption of Water Vapors on Ionic 77059 crystals. Communication 1. Methods and Results SOV/62-59-12-3/43 of the O,tudy of Water Vapor Adsorption on the Crystals of Silver Iodide and Chloride which equal 1,450 cal 63 P mole* Fig. 5. Inosteres of water vapor adsorption on silver Iodide in the temperature interval (20) (-200). Card 5/T Study of Adsorption of Water Vapors on Ionic 77059 Crystals. Communication I. Methods and Results so'V/62-59-12-3/43 of the Study of Water Vapor Adsorption on the Crystals of Silver Iodide and Chloride Comparison of the iaosteres shows that there is no increase of the heat of transition with increasing value of a, indicating that the phase transition does not take place in the total mass of the adsorbed, water, but only in the upper adsorption layer. Adsorption isosteres for AgCl do not have this inflec- tion, indicating that all the water, adsorbed on the crystals of AgCl at -200, is in a supercooled state. This difference--the existence of phase transition in the water adsorbed on AgI, and its absence in water on AgCl--can be connected with behavior dif- ference of these aerosoles when they are used cloud seeding. There are 6 figures; and 18 references, 8 Soviet, 1 Oerman, 1 U.K., 8 U.S. The 5 most recent U.S. and U.K. references are: S. Birstein,, J. Meteorol., 12, N 4,11J24 (1955); V. Shaefer, J. Meteorol.,, 11, 417 (195 ; E. Fournier, D * Albe Quart. J. Roy. Card 6/7 Meteorol. Soc., 75, N 323, 1 (1949); B. Vonnesut, Study of Adsorption of Water Vapors on Ionic 7705 Crystals. Communication I. Methods and Results SOVY62-59-12-3/43 of the Study of Water Vapor Adsorption on ".,he Crystals of Silver Iodide and Chloride J. Appl. Phys., 18, N 7, 593 (1947); W. Patrick, W. Kemper, J. Phys. Chem., 112, 369 (19381). ASSOCIATION: Institute of' Physical Chemistry of the Academy of Sciences, USSR (Institut fizicheskoy khimii Akademii nauk SSSR) SUBMITTED: April 23, 1958 Card 7/7 5(0) AUT110113i Aetakhovt K. V., Dubinin, M. ht.# sov/76-33-1-43/45 - Chmutov, K. V. , Nerr-as-ov-7r.-T. TITLE., - Sergey Aleksandrovich Votnesenakiy (1892-1958 Obituary ~ (Sergey Aleksandrovich Voznesenskiy (1892-1958 ) PERIONCAL-. Zhurnal. fizicheskoy khimii, 1959, Vol 33, Nr 1, pp 234--237 (USSR) ABSTRACT: S. A. .-doctor oC chemical sciences and commercial Of' the first degree, died on August 6, 1958. A8 a student, Vozne3onsk--y worked in the laboratory of Professor N. A. Shilov and was occupied with active carbon for gas masks for the elaboration of the method by N. D. Zelinskiy. Later on, Shilov sent him to the kafedra fizicheskoy khimii Moskovskogo vysshego tekhnicheekogo uchilishcha (Department of Physical Chemistry of the Moscow School of Technology) for preliminary atudy for his professorship. At the same time lie worked at the Moskovskaya sanitarnaya stantsiya (Moscow Sanitary Station). In 1919 he became lecturer for chemirtry at the Penzenskiy institut Narodnogo obrazovaniya (Penza. Institute of liational Education) but Card 1/3 remained in contac6 with Shilov's.laboratory and, together Serf,ey Alek sandrovich Yo z tic sonol- -40- (V3 92-1 ~5 8) - SOY/76-33-1-47i /415 Obi tllarL, "hilov, he publinhod Vany!ern ill ft~u~: 'y 11auchno- khi;-,,icher-ho~;o irrititill'-1 'Repo'.3'If the ~;cicntific 1-1.eoearch Ino-titutc of iii 1921. liL the orme year he bccri,:,,e lecLk~l--or at t'~o !,'Opartment of Physical Chemistry of tht, :.'oqc(j-.: School ol' '2cchnolo.-,,, aT;,, ill 1)23 hi-! we"t to 77cl-lin nwi lVo1-1:(!d ~:.; t'i i'vol'onsor Freundlich. Irk hc wan fwliL to ill oi,kicr 1A, GO,.,Mjr(3 pueil.'icntion plantL %no''in 1",2, !ie. particip,,06od in Lhe Buns~n Con,,.;rcss of Chemdrta. Ill 1912,( ';ccarc! lecturer Pt the kafedra kolloidnoy lkl,imii (Chair of Colloidal Chemistry) and in 1921/1 profec-'01, V-11c ellair"!:Itv 01, the knfedra analiticheckoy 1-hirii Chair U Analytical Chemistry of the After t,,,e do!,.t,-, o; Shilov in.1930, he also became th#7 chairran of the neorEanicbeskoy khimii ( Chair of Inor.,--ini-c Chomictr Tji ln",2 the khimicheskiy fakultet !'VfU (Department of Chemistry) was converted into the Voyennaya ankademiya k1ur-ictieskoy (1:ilitary Academy of Chernicr.' Defense and Voznesenukiy 1kopt his post. Card 2/3 Sergey Aleksandrovich Voznesenskiy (1892-1958)- SOV/76-33-1-43/45 Obituary Prom 1921 - 1941 Voznoaonrkiy dirocted the Laboratory of Water Purification at the Institute "Voo~-Pr,". 1- lr)rili he became pi-oCessor ane head,of a nhair at the U-.-allskiy olitekhnichoskiY institut Urars Polytochnical Institute). jic waa one o-L' tl,-.2 i'ir:-.t to 7,oint cait the fluoro-ort,,anic compounds and rrotc n. -oiio::r:~jj'. oil "The Chemistry of Fluorine". In conclusion, an enun_~-ration ul" the works by S. A. Vozncsenskiy is given, divided into inorganic chemistry, physic 'al and colloidal chemistry and water-technology. There are I figure and 65 references, 56 of which are Soviet. Card 3/3 "On The Formation Of Porous Structure In Carbon Activation." report submitted for 4th Intl. Symposium on the Reactivity of Solids, Amsterdam, 30 May - 4 June 196o. 5.44 00 (8056 , sov/62-60-1-2/37 AUTHORS: Moskvitin, N. N., Dubinin, M. M., Sarakhov, A. I. TITLE: investigation of Steam Adsorption on Ionic Crystals. Communication 2. Nonequi~lbrium Sorbtion of Water on Crystals of L'ead Iodide PERIODICAL: Izvestiya Akademii nauk SSSR. Otdelentye khimicheskikh nauk, 196o, Nr 1, pp 9-14 (USSR) ABSTRACT: Nonequilibrium sorbtion Isotherm* of water vapor on Pb 12 crystals (specific surface about 0.2 m2 g in temperature range of 20 to--~)Oo were obtained and studied. The experiments were conducted ac.-ording to tne method described by the authors In Izv. AN SSSR. Otd. khIm. n. 1959, 2080. The data obtained are shown in Figs. 1, 2,,3, and 4. The following conclusions were made: The sorption Isotherms,in the above Ii-,tervals of pressure, are irreversible. The process of steam sorption on Card 114 Pb12 is of a long duration, especially at positive Investigation of Steam Adsorption on 78056 Ionic Crystals. Communication 2. SOV/662-60-1-2/37 Nonequilibrium Sorbtion of Water on Crystals of Lead Iodide ASSOCIATION: SUBMITTED: temperatures (equilibrium was not established during ~~5 days at.200). No connection was found between the absorption behavior of PbI 2 and the properties of its aerosol particles In the seeding of supercooled clouds. There are 4 figures; and 16 references, 9 U.S., 7 Soviet. The 5 most recent U.S. references are: E. Ballou, C. Ross, J. Phys. Chem., 57, Nr 7, 653 (1953).; R. Beebe, G. Kin ton, M. Polley, W. Smith, J. Am. Chem. Soc . 2, ~1 I 2 7 0 0950W. Van Voorhis, R Graig, F. Bartell, J. Phys. Chem., 61, 1513 ('1957); S. Birstein, J. Meteor., 12, Nr 4, 3211 (1955); W. Patrick, W. Kemper, J. Phys. Chem., 42, 369 (1938). Institute of,Physical Chemistry of the Academy of Sciences USSR (Institut fizicheskoy khimil Akademil nauk SSSR) April 23, 1958 Card 2 /t DUBININ, M. M. "Modem Chemical Weapons Are Weapons of Mass Destruction." report submitted for the 6th Pugwash Confereact on Disarmament &:World Security, Moscow 27 Nov-5 Doc 1960. S/062/60/000/006/013/025/XX B02O/BO6O AUTHORS: Duhinin, U.-M., Zhukovskaya, Ye. G., and Zaverina. Yo. D. TITLE: Adsorption Properties of Carbon Adsorbents.1 Communication 5. Characteristics of Water Vapor Sorptio-F-by Active Charcoals in the Field of High Relative Pressures PERIODICAL: Izvestlya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk, 1960, No. 6, pp. 966-9755 TEXT; The particular form of water-vapor sorption and desorption isothermal lines on active charcoals has been repeatedly studied, especially at the authors' laboratory (Refs. 1 -5). The main ascent zone of the sorption branch was found to correspond to the isotherm of monomolecular adsorption. The concave form of the isotherm is a consequence of the particular adsorption mechanism of water moleoulee on the primary adsorption centers - the carbon monoxides on the surface - due to the formation of hydrogen bonds, whereby every adsorbed water molecule becomes a secondary adsorption center. These processes effect a steep Card 1/4 Adsorption Properties of Carbon Adsorbents. S/062/60/000/006/013/025/XX. Communication 5. Characteristics of Water B020/BO60 Vapor Sorption by Active Charcoals in the Field of High Relative Pressures ascent of the*adsorption branch of the isotherm (Refs. 3, 5). The main object of the work concerned was the study of water vapor sorption by active charcoals with different porous structures in order to clarify the possibility and the conditions of the capillary condensation course of water vapors in the intermediate pores. The investigation was extended to active charcoals with micropores Of at moat 10 A diameter, whose intermediate porosity was developed to different degrees. From among them q the types Pl-P5 Ri-R5 were granulated active coals from vegetable substances, rl-.r4 ~Gl--G4~ granulated active coals from fossils, and A'Y-10-AP4 (AU-10 - AU-14) active coals with developed intermediate porosity; they are described and thoroughly examined in Ref. 8. Frr the first two types, the sorption and desorption isothermal lines of beazene vapors were examined at 200 and at pressures of 1.10-5 to I at, while for the latter mentioned, the sorption and desorption isothermal lines of benzene vapors were examined at 20~:', and those of nitrogen at -1950 (Rof- 8). The adsorption apparatus is accurately described in Ref. 9, Calculated volumes Card 2/4 Adsorption Properties of'Carbon Adcorbents. B/062/60/000/006/013/025/XX Communication 5. Charaoterifltics of Water B0201B060 Vapor Sorption by Active Charcoals in the Field of High Relative Pxessures of intermediate pores-and micropores in active coals are indicated in Table 1. The method of the sorption balance wan used in the study of water vapor isothermal lines at 200. Sorption and desorption isothermal lines of the types R2, R1, R3, and R4 (Fig. 1) exhibit a distinct change of the slope of the isotherm branches after the section of the steep ascent, and.. more precisely, they exhibit a sharper slope and in the region of high 'pressures a hysteresis loop covering a large zone. The isothermal lines of the types G3, G4, and R5 (Fig. 2) are shifted toward higher relative pressures; the zone of the hysteresis loop is fairly large and extends over almost the whole isotherm. The critical sorption volumes of active charcoals are intercompared for benzene and water. Calculated scrption volumes of water in micropores of active charcoals are compared with the volumes of coal micropores in Table 3. Table 4 gives data derived from Ref. 8 concerning the volumes of micropores and intermediaie pores of active charcoals. Table 5 shows the distribution of the volume of sorbed water between micropores and intermediate pores in critical scrption. Card 3/4 Adsorption Properties of Carbon Adsorbents-. S/062j6O/0OO/OO6/O13/O25/XX Communication 5. Characteristics of Water D020/BO6O Vapor Sorption by Active Charcoals in the Field of High Relative Pressures Figs. 3 - 6 illustrate the sorption branohes of 0m sorption isothermal lines -.,f nitrogen vapors at -1950 and cf water at 200 for typical active charcoal spe6imens~ There are 6 figureag 5 tables, and 13 references; '12 Soviei and I US. ASSOCIATION: Institut fizicheakcy khimii Akadamil. nauk SSSR (Institute of Physical Chemistry of the Academy of Scienoes USSR) SUBMITTED: December 13, 1958 Card 4/4 S/062/60/000/009/002/021 B023/BO64 AUTHORSt Ganichenko, L. G., Dubinin--14. M., Zaverina, Ya. D., Kiselev, V. F., and Krasil'ni70'V,'Y- G. TITLEt Study of the Vapor Adsorption on Adsorbents With Heterogeneous Surface. Communication 2. Experiments With Organically Substituted Silica Gel PERIODICAL: Izvestiya Akademii nauk SSSR. Otdelenlye khirnicheskikh nauk, 1960, No. 9, pp. 1535-1543 TEXTt The adsorption of various vapors on methylated course-porous silica gel and a demethylated sample obtained therefrom is discussed here. The conditions of investigation were chosen in such a way that an essential change-of the specific surface seemed to be unlikely. Coarse-porous com- mercial silica gel KC.K(KSK) was taken as initial sample and carefully purified from iron and other impurities. To methylate the surface, silica gel was repeatedly treated with dichloro dimethyl silane vapors at 2000C. Then, the vapors were sucked off in vacuum at 100CC, and siliz:a gel washed with water until the reaction for the chlorine ion was negative. The Card 1/3 Study of the Vapor Adsorption on Adsorbents slo621601000100910021021 With Heterogeneous Surface. Communication 2. B023/BO64 Experiments With Organically Substituted Silica Gel silica gel thus obtained is called C-1 (S-1). A portion of silica gel S-1 was treated with nitric acid vapors at 2000C for 6 h. Thus, the organic part of the surface was oxidized, the CH 3 radicals substituted by OH groups, and the methylated silica gel with hydrophobic properties became hydrophilic. This specimen was called C-2 (S-2). The composition of the surface of silica gel S-1 and S-2 was determined by an organic analysis. The analysis was carried out at the same time as the determination of the weight losses in calcination at 12500. Table 1 shows the analytical results. It may be seen that the demethylation of the surface leads to an increase of its degree of hydration. The specific surface of the specimen changed by 3%. Nitrogen, cyclohexane, benzene, and water were used as adsorbates. Figs. 1-4 show the sorption branches of the -adsorption iso- thermal lines of the vapors of these substances. In all cases, the iso- thermal lines for S-1 are lower than those for S-2. Table 2 gives a comparison among the specific sorption volumes, The authors explain their results with the help of the reopective publiihpd data- Summing up% 1) The Card 2/3 Study of the Vapor Adsorption on Adsorbt~ntj S/OE' ) Y2'4j 010(A1009100 210 21, With Heterogeneous Surface. Communication 2, B0223 B064 Experiments With Organically Substituted Silica Gel substitution of one part of the hydroxyl jroup;i of t0i.? si1iva gPI surface by methyl groups leads to a reduction of its adsorptive power toward substances in the vapor phase, and to an increase of the molecular fields in the occupied monomolecular layers. 2) To determine'the specific surfaces of the adsorbents with a chemically non-homogeneous surface (on the basis of the equation by Brunauer, Emmett, and Teller for the adsorption iso- thermal line), it ifi necessary to select the adsorbates with special care. They should be as little sensitive as possible to the chemical hetero- geneity of the siirfaoe. L. N. Kurbatov is mentioned. Thc-re are 5 figures, 4 tables, and 32 reforencest 22 Soviet, 2 US, I British, 6 German,and 1 Swiss. ASSOCIATION: Institut fizicheskoy khimii Akademii nauk SSSR (Institute of Physical Chemistry of the Actidemy c-f Sciences USSR). M3skovskiy gosudarstvennyy universitet im. M.V.Lomonosova (Moscow State University imeni M. V. I,omonosov) SUBMITTEDj April 2, 1959 Card 3/3 84849 s/o6 60/000/010/002/018 ,:,2 B01 5YB064 6-. / / 9 0 C4,7d AUTHOR: Dubinin, M. M. TITLE: Investigation of the Adsorption of Vapors on Adsorbents With Heterogeneous Surfaces. Information 3. Analysis of Experimental Data on Silica Gels With Chemically Modified ,Surfaces PERIODICAL: Izvestiya Akademii nauk SSSR~ Otdeleniye kbimicheakikh nauk, 1960, No. 10, PP- 1739-1750 TEXT: A chemical modification of the surfaces of silica gels by substituting the hydroxyl groups of the surface by various radicals changes essentially the adoorptive properties for vapors of organic an inorganic substances. Usually, the adsorptive power decreases with increasing number of substituted OH groups. The Brunauer-Emmett-Teller (BET) equation (1) for the adsorption isothermal line (Ref. 3) can be applied thereto, and the adsorption am corresponds to the formation of continuous monomolecular layerB. A decrease in the adsorptive power is Card 1/4 8h849 Investigation of the Adsorption of Vapors on S/062/60/000/010/002/018 Adsorbente With Heterogeneous Surfaces. B015/BO64 Information 3. Analysis of Experimental Data on Silica Gels With Chemically Modified Surfaces mostly characterized by a reduction of am~ Here, the experiments were made with silica gels of different porosity of the types CY, (SK), CY,-4 (SK-1), CV-2, (SK-2), CM (SM), C-t-1-1 (sm-1), r-tl-z (SM-2), C-1 (S-1). and C-2- (S-2); their OH groups were partly replaced by fluorine atoms or CH3 radicals.11and the applicability of the BET equation to the adsorption of various vapors (IN2f Ar, C6H12' C6H6' H20 ) at -1950C (112) Ar) and 200C, respectively, was checked (Table 1). For the majority of the systems investigated, the BET equation is found to hold in the range of relative equilibrium pressure. Owing to the substitution of the OH groups by F-atoms or CH3 radicals, am decreases (less for nitrogen and argon vapors than for cyclohexane, benzene, and water vapors). The change of the adeorptive properties by chemical modification can be determined most conveniently by a graphical determination of the affinity coefficient i.e., by the affinity coefficients of the isothermal lines (Table 2, range of relative equilibrium pressure; Table 3, relative changes of the Card 2/4 84849 Investigation of the Adsorption of Vapors on s/o62/6o'/000/010/002/018 Adsorbents With Heterogeneous Surfaces. B015/BO64 Information 3. Analysis of Experimental Data on Silica Gels.With Chemically Modified Surfaces adsorptive power and the values for I). A change of the porosity of silica gel was found to effect no particular change of a. for N and Ar, whereas in the case of benzene and cyclohexane a considerable eifect is observable (Table 4). To achieve a qualitative explanation of the decrease in the adsorptive power of silica gels due to chemical modification, the constants C of dispersion interaction were computed (Table 5) according to Kirkwood (Ref. 5), the van der Waals radii r of the adsorbed molecules were taken from Tables, and the relative energies of dispersion interaction were determined (Table 6). The change of the values for C and r of the surface groups determining the equilibrium spacings of the adsorbed molecules in the monomolecular layers were found to be the main reason for the reduced adsorptive power of silica gels for vapors of non-polar substances due to the substitution of F-atoms and CH~ radicals for the OH groups of the surface. The reduction of this adsorptive power increases with substances in which adsorption is controlled by a donor-acceptor Card 3/4 84849 Investigation of the Adsorption of Vapors on S/062/60/000/010/002/018 Adsorbents With Heterogeneous Surfaces. BO15/Bo64 Information 3. Analysis of Experimental Data on Silica Gels With Chemically Modified Surfaces component. The applicability of the BET equation to determine the specific surface of adoorbents is discussed on the basis of a semi- empirical equation (5) for the adsorption ivothermaliline given by A. V, Kiselev, and the results are given (Table 7). The latter show that the applicability of the BET equation is limited. The author thanks A. V, Kiselev for a discussion. There are 2 figures, 7 tables, and 10 references: 6 Soviet, 3 US, and 1 German. ASSOCIATION: Institut fizicheskoy khimii Akademii nauk SSSR (Institute- of Physioa2 Chexiatrjr of the Acadeq7 of Sc ences_q~SRJ SUBMITTED; June 2, A959 Card 4/4 IVANOV, A.K..-. DPININ, N*H.; KIBZW, V.V. Screw compressors in the gas Industry. Gaz.prom. 5 no-10:40-43 0 ,6o. (MIRA 13:10) (Compreseors) 0/076/60/034/009/015/022 DO 1 cl"/BC 56 AUTHORS: Dubinin. M. M., Vishnyakova, M. Lt., luhkovskaya, Yt-. G., Leontlyev, Ye. A., Luklyano7L-ch, V. M.. and Sarakhov, A. I. TITLE: Investigation of the Porous Structure of Soli-33 by Sorption Methods. V. Application of Different Methodu for Studyine the Structure of Intermediate and Macro-pores of A,,,-tive Coals PERIODICAL~ Zhurnal fizicheskoy khimii, 1960, Vol. 34, No. 9, pp. 2019-2029 TEXT: A thorough investigation of the structure of intermediate pores, whose size is between micro- and jaacrc-pores, of some typical kinds of coal (from the type AY-10 - AY-14 (AU-10 to AU-14)) with intermediate porosity is carried out by the method of capillary condensation of vapors (benzene or nitrogen), by pressing in mercury, or by electron microscopy. Data concerning the volumes of the micro- and intermediate pores of the investigated kinds of coal are given in a table and Ghow that in all Card 1/3 Investigation of the Porous Structure of S/076/60/034/009/015/022 Solids by Sorption Methods. V. Application B015/BO56 -of Different Methods for Studying the Structure of Intermediate and Macro-pores of Active Conla samples the volumes of the intermediate pores exc9ed those of the micro- pores by a multiple. The_sor8tion and desorption 41 experiments carried out with nitrogen vapors at 195 C and benzene at 20 C a dGvice with quartz scales. A detailed description of this device is given in Ref. 11. The sorption isothermal lines (Figs. 1-3) are all S-shaped and have a hysteresis, the beginning of which corresponds to the equilibrium pressure (P/ps)o = 0.175 for benzene at 200C and (p/p s)o M 0.45 for nitrogen at -1950C. For the purpose of determining the porous structure b~r the method of pressing-in mercury, two pore gauges of the type n A-4 (PA-4)(Ref. 8) (one for low and one for high pressure) were used, For electro-micro- scopic examinations a Y21M-100 (UEM-100) electron microucope wa:, used, carbon replicas were recorded (Fig. 5), and pore diameters frGm 70 to 110 A were found. The summational curves (Figs. 6-8) of the volume of the intermediate pores with respect to their effective diameters, which were calculated from the sorption Isothermal lines for benzene find were measured J Card 2/3 Investigation of the Porous Structure of S/076/60/034/009/015/022 Solids by Sorption Methods. V. Applicatioi-' BO,15/PO56 of Different Methods for Studying the Structure of Intermediate and Macro-pores of Active Coals by pressing in mercury, showed good agreement. In the caGe of the results obtained for nitrogen, less good agreement was found. The electron.micro- scopic values qualitatively confirm the sorption values and the measured values obtained by pressing in mercury. B. P. Bering and V. V. Serpinskiy are thanked for their -interest in the present paper. There are 8 figures, 1 table, and 13 references: 12 Soviet and I US. ASSOCIATION: Akademiya nauk SSSR Institut fizicheskoy khimii (Academy of Sciences USSR, Institute of Physical Chemistry) SUBMITTED: December 24, 1558 Card 3/3