SCIENTIFIC ABSTRACT MAYZUS, Z.K. - MAYZUS, Z.K.

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SCIENTIFIC ABSTRACT
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Oxidation of Wdrocarbons in the (Cont. ) r3OV/3663 Khorre, D.G.0 L.G. Chuchukinap and N.M. Emanuel' (Institute of Cbemical Physics]. WF11 Function of Metal Stearates in the Hydrocarbon Oxidation Reaction 145 7he dual role of copper and manganese stearates as both catalysts and inhibitors of oxidation of iso- and n-decanes is described. The authors determine the critical concentration of cupric stearate ( - 0.03% per mole) above which the induction period for n-de oxidation increases. Hkvzus Z.K., L.G. Privalova, and N.M. Mani, 11 (Institute of Chemical in the Wchanism of n-Decane Oxidation in the Course of the Pleaction 14 152 The authors have used C tagged n-deeane to Investigate changes in the rates of formtion and consunytion of n-decyl hydropero3ddes during the oxidation of n-decan . The hypothesis that variations in the activities of radicals carrying on chain reactions are proportional to the accumulation of oxygen-containing oxidation products in the reacting mixture is offered as a possible explanation of the phenomenon. card 8/X 5W AUTHORS: Babayeva, A. A., M ~is SOV/62 -6/42 M~ 1 -59-8 __ -- Emanuel', N. M. TITLE: Oxidation Kinetics of Isobutane in the Presence of Hydrogen Brftldt PERIODICAL: Izvestiya Kkademii nauk SSSR. Otdoleniye khimicheskikh nauk, 1959, Nr 8, pp 1378-1385 (USSR) ABSTRACT: In the present paper the investigation of the catalytic oxidation -)f hydrocarbons is continued and the oxidation kinetics of ramified hydrocarbons (in this case isobutane in the presence of HBr) is investigated by means of NBr. This reaction is very sensitive to the surface condition of the reaction vessels. Thus molybdene-glass vessels covered with a layer of boron oxides were used. The oxidation was carried out an a vacuum unit under static conditions. A figure shows the unit used. The way in which the reaction products were removed from the vessels is described. The peroxides obtained in the reaction were identified polarographically (peroxides of tertiary butyl, tertiary butyl alcohol, and acetone). Very definite stages were observed in the reaction process. In the Card 1/2 first stage isobutane is mainly oxidized so that it forms the Oxidation Kinetics of Isobutane in the Presence of SOV/62-59-8-6/42 Hydrogen Bromide hydroperoxide of tertiary butyl; in the second stage the oxygen consumption drops and the reaction takes place via the formation of the hydroperoxide of butyl alcohol and the decomposition of the peroxide while acetone is formed. These facto were obtained by means of the determination of the yields under varying reaction conditions (changes in the concentration of initial materials) (Figs 3,4). The summary reaction process is represented by the following equations: i-C4 H10 +02---r~ (CH3)3 COOH? (CH 3)3 COOH + (CH 3Ya__~' (CH 3) 3COH + + (CH 3)2CO + CH4* There are 5 figures, 4 tables, and 14 ref- erences, 9 of which 4re Soviet. ASSOCIATION: Inotitut khimicheskoy fiziki Akademii nauk SSSR (Institute of Chemical Physics of the Academy of Sciences, USSR) Moskovskiy gosudarstvennyy universitet im. M. V. Lomonosova (Moscow state University imeni M. V. Lomonosov) SUBMITTED: December 27, 1957 Card 2/2 BABKTSVA, A.A.; M&TZUS, Z.K.; EM&IRM'. N.M. Changes in the chemistry of the oxidation of isabutane in the presence of HBr as affected by additions of reaction and products. Dokl.A.N Azerb.SSR 15 no.11:1009-1013 '59. (MM 13: 4) 1. Kafedra kbimicbeekoy kinatiki Moskovskogo goeudiiretvonnogo universiteta im3ni Lomonoaova I Institut khimichoskoy fiziki AN SSSR. Predatavleno akademikom AN Azerbaydzhanskoy SSR M.F. Nagiyevym. (Propane) (Oxidation) 5W AUTHORS: Knorre, D, SGV/76 - 33- 1-- 36/45 Markin, jj' T~ . , Em a ntre 1 N ~ M. TITLE-. The Kinetics of the Valence Changes of Manganese Stearate an the Course of the Initial Macroscopic Stage of the Catalyti,~ Oxidat3.on ef n-Decane (Kinetika valentnykh prevrashcheniy stearata margantsa v khode nachallnoy makroakopicheskoy stadii katalizirovannogo ok-isleniya n-dekana) PERIODICAL-, Zhurnal fizicheskoy khimii, 119591, Vol 33, Nr 1, pp 213-218 (USSR) ABSTRACT: A short t--me ago it was found (Refs 1-3) that on the oxidat-,On of n-de,^ane (1) several changes take place in the laurates and stearates of manganese and cobalt, A valence change of the catalyzer takes place which causes its falling out and be,~ominE ineffective (Ref 4). In the case under diSCUSSIOn the kinetics of the accumulation of colored intermediate products of these catalyzers are investigated. The oxidation of (I) took place in a way already described,, The samples were examined in the wave length of 400 m/(( by the spectrophotometer SP-4, It is stated that the effective activation energy of the accw-iulation of the Card 1/2 intermediate products of manganese stearate is 8,1 kcal on the The Kinetics of the Valence Changes of Manganese SOV/76-33-1-36/4,' Stearate in the Course ,F the Initial Yacroscopic Stage of the Catalytic Oxidation of n-Decare ASSOCIATION: SUBMITTED: Card 2/2 oxidation of (I), whereas the activation energy of the further reduction of the intermediate compound is 16.1 kcal. The absorption coefficients of the intermediate compound were determined in sumene (since it is simpler than in (T) ) and at 400 m 4, the value 780 1/g-mol cm was found. Beer's (Ber) law is followed up to a catalyzer concentration of 0,016 mt/Fig 7). Tests With (I), tetralin, and cumene showed that the absorption coefficient of the intermediate compound obviously does not depend too much on the hydrocarbon to be oxidized (Fig 6).The kinetic of the accumulation of colored intermediate products show an initial acceleration (Pig 7). At the curve maximum cumene and tetralin show a complete transition of manganese stearateto alli-her valence stage and (I) a 30~5 transition only. There are 8 figures and 4 Soviet references, Akademiya nauk SQSSR Institut khimicheskoy fiziki,11oskva (Academy of S-iences, USSR, Institute of Chemical Physics, Moscow) July 17, 19571 H1 S G., :'n~%,z TITLE: Ki !~ ot i c s of t',e ?onct-nn Pcti-x(,E~r D-`1 '.!an:- -olifl Stcr~r-i'~ in v Z,1 I f j -~ t V 1 1 jr)4 (T'S7,) Ar-T*A-,T; S~V, pf~l -I.- on C, !,-in~~tivc; of h-1r:,- involvirt- or t is o~ - ve to -t hi ;-".c:r val P- n, t,,~ t1iin 2,- 0. 1 hy t Ye. Do r v a r, d E- !ii,! "o'. -L - I L . 1 . 7hi rl-o ('?(hf of thr,-)t,,:r,-: rj-jr- t i oil t,;~_ c':,,i- e in t,e v~' C'It 1:"St ii-p until nL)%,.,, n t a i -.,21 . T1 f i r t ex ri m en t . c - rr i e d o tit i n t'-, r -, t F- -I! i ~1 1 s j- -,. e r, -) ve ol t ~,a t t'-,, r(-:i -~ t i o,-. :, i. t in t;-.e title v,,--.r,! It .,,,Ps f'f)r t~~i 1-. 1 a r; ! I - : ~ a !- , i t , ~ - r. n s 7! -) r -1 t - - c t ~ d 1, 7 J. ,- Ii c c ; I i r Card 1 /3 me,.-:rre, tl,c O~tic-ll de.,n-ty of t!'.O :Tl~- 'ill T..,2 s K i - c. f t':,. c e v, n - 'N,7- - i~ ..r-*.-ciple tc t".c sPc-ctropht.-- T,.,, ciirvi-- obt--.i.i,ii with; v --io-" ri r, r t, , E, : r, !~ t , i r n '-c ( I ) :, il,l v,(F j. ,1~ 4, . .I ! , c an c r)!, or i~l f i r oT' T' c r'.!-, I f r a tr----r:l'or-,-tion occi.,rs .,.ith r-,io~7 (,T) Of hy r r x 0- t 4 Z i:~ t-~-, r tur- inci-cases tht-- vul i t.% -i 11 j t. .1 t r) w.; ()I r F! ir tien t t -)n )f' t:,(-- -A f t i 1 :7 ~,i ri i; r I y i c: - I i t c c t i v n,; C0111 vIE rcli'll.- I r, 2 C (-)r. of' t;,,, i v, it. on (-r e r , y v lute l- -1 T t r, i ~ t f'o r t it, r i + i r t r - 6 t i o n or r _J t f Tv, 7 f Car V Kinetics of the -'eaction Between Decyl Hydroperoxide "76--, and Yan-anous Ste,rate in n-D-are 12 rof,~re-cer-, )f iwhic,. are ".ovi -t. ASSOC 1ATION Aka-1. emiya r-iuk I r,:i Ii + i:t khi~nichies~oy f i z i !- i, (A c ad emy of Scie- c,-s, V-; R, :n!,ti tute of icA MO P, cow,! SUPMIT'ED: July 17, V~57 Card 3,'3 5(4') AUTHORS: Denisov, Ye. T., MayzuB# SOV/20-128-4-33/65 9 17. M.9 corresponding Member, AS USSR Skibida, I. P. , It= t[# TITLE: Kinetic Laws for Autocatalytic Reactions in Open Systems PERIODICAL: Doklady Akademii. nauk SSSR, 1959, Vol 128, Nr 4, PP 755-758 (USSR) ABSTRACT: In chemical technology, the continuous process of reactions is attempted more and more, i.e. of reactions in open systems. While the kinetics of simple processes had already been in- vestigated (Refs 2-4), no data are available on autocatalytic processes. Therefore, the continuous oxidation of cyclo- hexanone to adipic acid by oxygen at 1300 was studied. The apparatus used permitted the automatic maintenance of the inflow of raw material and of the outflow of the reaction products. The term of "specific velocity" v is defined as the volume of the liquid initial component supplied to the unit of volume of the reaction vessel in the unit of time. The value I indicatas the avera,-,e duration of stay of the v liquid in the reaction vessel. The content of hydrogen per- Card 1/3 oxide, adipic acid, and CO 2 in the reaction product is Kinetic Laws for Autocatalytic Reactions in SOV/20-1213-4-33/65 Open Systems determined for different v. In the continuous process, a stationary state appears, i.e. the reaction rate and the discharge of the end product are in an equilibrium relation to each other. Figure 1 shows the dependence of the equi- librium concentration of adipic acid on v. In the transition from the periodic process to the continuous one, it is of no importance in which phase of reaction this transition takes place since the equilibrium concentration ig formed corresponding to v, irrespective of the oxidation degree attained. While for simple reactions the rate rises mono- tonously with v, there i-s a different dependence for auto- catalytic reactions since not only the concentration of the initial. product but also that of the resulting intermediate product (hydrogen peroxide) is decisive. Figure 3 shows that the reaction rate passes a maximum at a certain v; if v keeps on rising, the reaction rate falls since the concentration of the hydrogen peroxide becomes lower. The equation for the maximum reaction rate Is written down. It is pointed out that in the continuous process, in comparison with the Card 2/3 periodic process, a smaller amount of burning to CO 2 and H20 Kinetic Laws for Autocatalytic Reactions in SOV/20-128-4-33/65 Open Systems occurs because the reaction products remain in the reaction zone for a shorter period. There are 3 figures and 6 references, 3 of which are Soviet. ASSOCIATION: Institut khimicheskoy fiziki Akademii nauk SSSR (Institute of Chemical Physics of the Academy of Sciences, USSR) SUBMITTED: June 22, 1959 Card 3/3 8560b S/062160100010061023/02-, ' X /J 10 0" 2205 B02O/BO6O AUTHORS: Babayeva, A. A.,,PyZus' Z. K., and Emanuel', N. M. TITLE: Part Played by the Surface in the Macroscopic Stages of IsobutanelOxidation Peaction in the Presence of HBr PERIODICAL; Izvestiya Akademil nauk SSSR. Otdeleniye khimicheskikh nauk 1960, No. 61. pp. 976-980 TEXT: The oxidation mentioned in the title consists of two distinct macroscopic stages separated in time (oxidation of isobutane with oxygen on tert. butyl hydroperoxide, and decomposition of hydroperoxide and its -eaction with the initial hydrocarbon). The differential-calorimetric method suggested by A. A. Kovallskiy (Ref. 5) was used for the atudy of the oxidation kinetics, and furthAr evidence was found for the two-otage reaction course. and the part played by the surface in the macroscopic stages of this reaction was defined. The reaction was studied in a static vacuum system. A Mo-glass reaction vessel was washed out with a boric acid solution for surface stabilization (Ref. 6). The differential thermocouple Card 1/4 856OL Part Played by the Surface in the S/062/60/000/006/023/025/XX Macroscopic Stages of Isobutane Oxidation B02O/BO6O Reaction in the Presence of aDr consisted of a constantan wire and several copper wires entered into 0.44-mm quartz capillaries. The junction for the measurement of temperatur"- in the central zone was fixed in the central capillary, and the junction for the measurement of the wall temperature was fixed on the vessel wall, The heat flow between the temperatuie in the renter of the reaction mixture and on the vessel wall was measured by a mirror galvanometer with an accuracy of 2.8.10-9 a/'mm/m. The kinetic curves of the accumulation of tert, butyl hydroperoxide and the heating curves of the reaction mixture during the isobutane oxidation in the presence of HBr are shown in Fig. while the temperature dependence (-,f 'Tmax (heating maximum) is illtistrated in Fig. 2. The activation energy determined from the inclination of the straight line is 16.8 kcal/mole, which Is in gocd agreement with the value of 16.4 kcall/mole found earlier from the kinetic curves of the accumulation of tert. butyl hydrcperoxide. Tests made by applying a KCI layer first onto the reaction surface vessel and then onte the surfane of the central capillary revealed that the heating of the react-ion mixture. which corresponds to the reaction rate in the hydrrpercyido formation,. is Card 2/4 8cf6oll Part Played by the Surface in the S/062/60/000/006/02~/025/'X,; Macroscopic Stages of Isobutane Oxidation B020//BO60 Reaction in the Presence of HBr caused by the liberation of heat in the reaction vessel interior and not on it6 surface, For a proof of the heterogeneity of the second reaction stagej the reaction vessel was filled with packing material the kinetic curves of the hydioperoxide aocumulation with packing material in the vessel (Fig. 3) distinctly showing the different effects of the packing material upon the first and the second reaction stage, The effect'cf the packing material is the same at 11~00 and 1700C, The missing effe~-t of *he packing material upon the kinetics )f -the process in the first stat-,e ~T-oves the homogeneous character of the ter'. butyl hydroxide formation with a heterogeneous initiation of the chains. The rate increase in the second reaction stage with enlaiged vessel surface prcves the heterogeneous chara,:~ter of this stage. In the oxidation of isobutane in the presence of HBr there ocTurs partly a decomposition of tert, butyl hydroperoxide under formation of acetone, and partly its reantion with isobutane to form tert. butyl alcohol, In the presence of packing materia'- (Fig. 4) the amount of resulting acetone is increased. and that of tert, butyl alcoh-1 is decreased. There are 4 figures and 6-references; 5 Scviet and ' US, Card 3/4 85604 Part Played by the Surface Jln the S/'062/'60/000/ 006/1023/'O,",,/'XX Macroscopic Stages of Isobulane Oxidation B020 B060 Reaction in the Proooncc- of' 11Br ASSOCIATION.- Institut khimicheskcy fiziki Akademii nauk SSS 0 R (Institute of Chem"cal Physics of the Academy cf Sciences USSR) I / SUBMITTED. December 16. !958 Card 4/4 82654 11195 '6 0 'r C, I'3C AUTHORS: Mayzus, Z,. K~, Skil-Ida, 1. Emanuel', r,, Yakovleva,_7 I - . T, TITLE-. Chain- and Molecular Reactions of T1,,te r-r.( ntu,,3 -.i tlie Oxidation of n-Decane PERIODICAL: Kinetika i kataliz, 1960, Vol 1, No.. 1, Tp '----,')2 TZXT: The authors studied the decomposition kinetics of the hy~ilr(-- peroxides of n-decy lin r-decane in the presence of t>(- -n--iphithone a,~tiz,,. as an inhibitor. Thelatter was added at various stages of the rtjucti~,r. The constant of hydroperoxide decomposition without chain roL,C11,-,r calculated from the kinetic curves and was found to equal 1.7 - - i.,,.io-3 min.-'. It is rear the value of the reaction ruto -_c-~t-!r;~ of the reaction chain branchinL in the, oxidation of n-duoano =111-lo-3 min.-'). From this the authors concluded that, be!.id s the decomposition of the hydroperoxidc molecules into radicals without reaction, there also takes place a molecular decomposition tirdur, the formation of ketcnes and water. c~L -naphthene was found to rii.-;~c~ not o, 11 Card 1/3 Vr Chain- and Molecular Reactionn of Intermediates 7 in the Oxidation of n-Decane B015/Bo6o with the RO* radical but also with RO' radicals developin[- in the 2 hydroperoxide decomposition. The formation of free radicalaiwity, the chain branching occurs i.n parallel to two reactions: the monomolocul~ir decomposition of the hydroperoxide ROOH--~>-RO + OH and the reactioT~ of the hydroperoxide with the hydrocarbon ROOE + RH-->RO + H 20. The ~i--Ahorc established the effective reaction rate constant of the chain bra.-i-LinE: reaction in the oxidation of n-decane as the sum of the eqnstants of t,'-.i? monomolecular decomposition of the hydroperoxide (in chlorobenzene as all. inert solvent) and of the bimolecular reaction of the hydroperoxide with n-decane. The re4ction rate constant of the bimolecular tranchini- reaction rises with the weakenine of the C-H bond in the hydrocarhon in the following order: decane< isodecare O,Ay -.,0 or 6x R*, chain forination. k I k 2 Chain lengthening: R* + 0 )RO and RO, + R11 ROOH + R - Cleava,ye: k 2 2 k k. ROOH 3a, RO-+ OH .. Chain rupture: RO, Ro,-~Al~and RO2+ InIl- I-.-"ROOH + In' (In - inhibitor). According to V. M. Andreyev who obtained [InHl,,, =2 21hkswg 2alk, + !t U. I//" kv(ka +T) + ki (k#+ vv for the critical inhibitor concentration nDd ki -21RHIks I k.+u (B) Card 2/3 Critical phenomena in... S/020/61/140/00 ~ /0 1 5:'024 B127/B10'. cr ) for the ratio. The authors determined the ratio k,/k',, for naphthol as an inhibitor, using the experimentally determined constant, nHj cr = 9-10-9 mole/ml, and the following constantst v = 0.5hr RHJ 5.2-10-35mole/mi, 4) 1.8-10-9 mole/ml, It was found that J k /k 1.33-10 . The activation energy of the reaction of RO' w2tY. 1 2 ? n-decane equals 19.1kcal/mole, and that of the reaction of' RO, with a-naphthol equals 5.4kcal/mole. v is determined by W/V. W is the volume of the substance entering the reaction vessQ1 per unit time, and V ia thf- volume of the ronction mixturo. Thure art, ~ FIR1.1ron lind 'I Soviot r,t'i.r ences. ASSOCIATIONz institut khimicheskoy fiziki Akademii nauk SSSIR (Institute of Chemical Physics of thP Academy of Sciences USSR) SUBMITTED: May 20, 1961 Card 3/5 LIS 00 28674 S/02 61 /140/002/01 9/02_3 B1 30YB1 10 AUTHORS: Zaikov, G. I., Ma~rzus, Z__Z., and Emanuel, N. M., Correspond- ing Member AS USSR TITLE: Mechanism of chain ramifications during oxidation of methyl ethyl ketone in liquid phase PERIODICAL: Akademiya nauk SSSR. Doklady, v. 140, no. 2, 1961, 405-408 TEXT: The authors found that the degenerate chain ramification during oxidation of methyl ethyl ketone (I) in liquid phase proceeds through the decomposition into radicals of two intermediate compounds, keto hydro- peroxide and diacetyl. (I) was oxidized with atmospheric oxygen in an autoclave at 50 atm and 100-145'C. The oxidation products (acetic acid, ethyl acetate, diacetyl, ethanol, peroxides, 00, and C02) were analyzed chemically or by paper chromatography. From the course of the kinetic curve for the (I) consumption (Fig. 1) it may be concluded that the oxida- tion is a reaction of the first order. In fact, a complicated process takes place, which is suggested by the chain reaction and the anomalously low factor before the exponential function in the equation for the constant Card 119-4 28674 S/02 61/140/002/019/023 Mechanism of chain ramifications ... B130YBIIC 1 of the reaction ratep k m 5.2-10 exp(11,200/RT) sec- . The chain character of the process was proven by addition of a-naphthol (II) as inhibitor. In the presence of (II), a noticeable induction period occurs, the duration of which rises with increasing inhibitor concentration. The rate of formation of chains during oxidation of (1)_gas determined from the kinetics of inhibitor consumption: cio = 1.5-10 mole/liter-sec at 1450C. During the process, the rate of initiation rises as compared with % due to the formation of degenerate ramifications. The rate of initiation during the reaction was determined by measuring the consumption of inhibitor (II) freshly supplied at different time interv4~s. Fig. 3 shows that the oxidation of (I) proceeds like a chain reaction. The rate of initiation, however, rises to double its value only. For ~he rateci of oxidation of (T), it is written down: ej - (k2/V-k5) [RCOR,](,),' /2. An increase.of the reaction rate 0 to double its value changes the initiation rate L), 1/2 by the 1.3-fold only, which leads to a linear dependence of the reaction rate on the concentration of (1), i.e., to a reaction of the first order. The rate of chain ramification during oxidation of (1) rises in proportion with the accumulating amount of keto hydroperoxide only at the Card 2/ 6 28674 S10201611140100210191023 Mechanium of chain ramifications ... B1301BI10 beginning of the reaction. Later on, a higher total rate of formation of radicals is observed than corresponds to the decomposition of keto hydroperoxide into free radicals. This shows thatp besides keto hydro- peroxide# other intermediates participate in the chain ramification during oxidation of (1). The assumption of a cooperation of diacet~l (formed in this reaction and readily decomposable into two radicals was confirmed by an increasing rate of chain ramification on 'addition of diacetyl. The dependence of the ramification rate on the total concentra- tion of keto hydroperoxide and diaoetyl is calculated: u1j-kjjDj,+ksjPjj=kj IDII+t'[Pll ki Here, ol is the rate of initiation at a certain instant of the reactionj [I)] and [P]. are the concentrations of diacetyl and keto hydroperoxide. On admixture of an additional amount of diacetyl, Eq6 (1) obtains the form: tV2=kjjDj2+kqjPJj=k, ID19+~[PI11 (2). k, From (1) and (2) we obtain: 01/02 - ~[D]j + ~k 2/ki) LP], [D ]2 + (kA [P] I.- k2A, can easily be Card 3/6 28674 S10201611140100210191023 Mecha~ of chain ramifications ... B13C/B110 calculated since the other data are experimentally determined. The 1 o-io-5 eec-1 , for k -4 see 1. re found for k at 14500: 1.4-10 autho 1 2: There are 4 figures and 14 references. 11 Soviet and 3 non-Soviet. The three references to English-language publications read as follows: W. D. F4mons 9 Go Be Lucas 9 j o Am# Chem* Boo. p 77 # 2287 (1955)1 J. So P. Pods We A - Waterej J6 Chem, Boo., 1956P 7171 We A. Watera, J. Chem. Soc., 1946, 1151- ASSOCIATIM Instiiut khimicheakoy fiziki Akademii nauk SSSR (Institute of Chemical.Physics of the Academy of Sciences USSR) SUBMITTED: May 20, 1961 Figi I.. Kinetic curves for the consumption of methyl ethyl ketone and the a ou ulation'of reaction products at T -, 14500, pressure a 50 atm, and air 6 velocity a 20 litere/hr. (1) consumption of methyl ethyl ketone, (it) semi- ;!:.'logarithmic ariamorphoais of curve 1, (2) accumulation of acetic acid, (4) Got J5) ethyl acetate$ (6) diacetyl )(7) keto hydroperoxide iights-hand scale s'(8) -ethatiol (right-hand scale Lege~ds* (a) hr, (b) M014. V, S/062/62/000/007/002/013 B117/BI80 AUTHORSs Zaikov, G. Ye., and Mayzus, Z. K. TITLEi Reasons for the different mechanism of oxidation of organic substances in gas or liquid phases PERIODICALt Akademiya nauk SSSR. Izvestiya. Otdeleniye khimicheskikh nauk, no, 7, 1962p 1175 - 1184 TEXT: Methods described in previous papers (E. A. Blyumberg, G. Ye. Zaikov, and N. M. Emanuel', Dokl- AN SSSR: 159, 99 (1961); Neftekhimiya 1, 235 (1961); E. A. Blyumberg, G. Ye. Zsikoi~ Z. K. Mayzue, and N. M. Emanuel Dokl. A-N SSSR 133, 144 (196o); Kinetika i kataliz 1, .510 (1960); G. Ye. Zaikov and Z. K. Mayzus, Kinetika i kataliz (1962); E. A. Blyumberg, Z. K. Mayzus,..&-.-&d N. M. Emanuel', ob. "Okieleniye uglevodorodov z zhidkoy faze" ("Oxidation of hydrocarbons in the liquid phase"), Izd. AN SSSR, M., 1959, P. 125; G. Ye. Zaikov, Zh. analit. khimii 15, 104 (1960); 15, 639 (1960); 17, 117 ~1962)) were used to study the oxidation of ethyl alcohol and methyl-ethyl ketone with different amounts of benzene. Experiments with ethyl alcohols 200009 50 atm-9 alcohol s benzene ratio Card 1/3 S/062/62/000/007/002/013 Reasons for the different mechanism... B117/B180 = 8 s 1, 2 : 1, 1 s 1, 1 1 2, and 1 j 3. Experiments with methyl-ethyl ketonei 1450C, 50 atm., ketone i benzene ratio w I j 1, 1 j 2, 1 t 3. In both cases, an increase in benzene, which reduces the dielectric constant of the medium, was found to alter the composition of reaction products. With ethyl alcohol, the amount of products obtained from the bimolecular reaction of peroxide radicals was 20% at I 1 3, and 80% in 'pure alcohol. With methyl-ethyl ketone, (1 1 3) the reaction products had the same composition as with oxidation in the gas phase. Differences in the oxida- tion mechanisms of polar organic compounds in goo and liquid phases are due to the rate of the reaction between the peroxide radical and the oxidizing substance (bimolecular reaction), the dielectric constant of the medium, and the formation of intermolecular hydrogen bonds. The bi- molecular reaction between RO~ and the test material, is between two dipoles and slows down as polarity decreases. Good agreement between experimental and calculated dipole momenta confirms the structure assumed for the activated complexes in the.case of methyl-ethyl ketone, but not for ethyl alcohol. This shows that the reaction rate of ROi and ethyl alcohol is not only dependent on the polarity of the medium but also on Card 2/3 5/062j62/000/007/002/013 Reasons for the different mechanism... B117/B18O the formation of intermolecular hydrogen bonds. It is not the individual molecules (RH and RO~) which react, but aggregates consisting of five or more particles linked by hydrogen bonds. There are 5 figures and 3 tables. OSOCIMONs Institut khimicheskoy fiziki Akademii nauk BSBR (institute of Chemical Physics of the Academy of Sciences USSR) SUBMITTEDi January 30, 1962 Card 3/3 s/195/62/003/oo6/002/011 E075/E436 AUTHORSs Z,,%ykov, G.Ye., ?~a '__Z'Y_' I -Y IZU a TITLE: Oxidatiop of methylethy]~42tone in the liquid and gaseous phases PERIODICAL; Kine*tika i kataliz, v.3, no.,6,-1962, 846-854 TEXT: A comparative study of the mechanism of oxidation of methylethylketone in the liquid and gaseous states was undertaken to elucidate the effect of polarity and*the al;sence of hydrogen -the phase oxidation was, bonding in oxi-dkrpe7d molecule--ri TYpip 41quid studied :Cor--the first time. Both the~liquid and gaseous oxidation were carried out at 1450C and 50 atm. The liquid oxidation Was a complex chain reaction.imttating a first order reaction. Individual stages of the roactions were studied by adding a-naphthol at various times durtng the reaction, this stopped the chain reactions and peemifted to characterize the non-chain reactions. Diacetyl, ketchydroperoxide and ethylacetate (intermediate oxidation ptoducts) undergo non-chain decomposition, the hydroperoxide in this case decomposing much more rapidly than hydrocarbon hydroper#xides. Diacetyl decomposes Card 1/3 S/195/62/003/006/002/011 Oxidation of meth ylethylketone ... E075/E436 at a higher rate than that calculated from the consumption of a-naphthol which indicates that the branching reaction is not the only decomposition process. Ethylacetate is decomposed by water forming during the oxidation, acetic acid thus produced being a part of the total acid formed. The remaindVr of the acid is formed from the decomposition of diacetyl. Acetic acid is also formed from ketohydroperoxide via diacetyl. In the gaseous phase oxidation there is formation of formaldehyde, acetaldehyde, acetone, formic acid, methyl acetate, methyl alcohol and CO, whichare not produced in the liquid phase oxidation. Conversely, the formation of ethylacetate and diacetyl decreases during the gaseous oxidation. There is little difference however in the formation of acetic acid. Comparing the rates of formation of the oxidation products during the two types of oxidation, the authors conclude that the specificity of the liquid phase oxidation is due to the polarity of the oxidized subatancq. Comparison with the oxidation of ethyl alcohol indicates that hydrogen bonds also affect the mechanism of oxidation* The mechanism of chain branching in the same for the liquid and gaseous oxidations which Card 2/3 s/195/62/oovoo6/002/011 Oxidation of methylethylketone ... E075/E436 indicates that the polarity of the oxidized substance affects all the stages of the oxidation process. There are 6 figures and 2 tables. ASSOCIATION: Inst,itut khimiche6koy fiziki AN SSSR (Institute of Chemical Physics AS USSR) SUBMITTEDi October, 7, 1961 Card 3/3 S/02 62/143/002/016/022 B1 45YB1 38 AUTHORS: Emanuel N. M. , Corresponding Member AS USSR, Zn-d Yakovleva, V. N. TITLI~: :4echanism of chain formation in n-decane oxidation PEAi0DlIC,',_L: Akademiya nauk SSSR. Doklady, v. 145, no. 2, 1962, "'69 Ti;.~T: The mechanism was experimentally investigated for liquid-phn8e n-decane to find out whether the reaction concerned is trimolecular k2 RH + 0 "RI + H 0 + R9 q ) or bimolecular (RH + 02~ R9 + HO' 2 2 2 2 2 - q'). The chair. formation rate W was measured withoL-naphthene as inhibitor, whose concenlration was measured by spectrophotometry after reaction with p-nitrobenzodiazonium chloride to form an azo dye at 1500C. The inhibitor consumption is liaearly time-dependent up to a )0 - 40716o conver- sion. The rate of inhibitor consumption, W InIl' determinded from the foregoing, grows with the inhibitor concentration, i. e., the radical formation rate is so low at the beginning of oxidation as to become Card 1/3 Mechanism of chain ... 5/020/62/1115/002/016/022 B145/B138 comparable to the rate of inhibitor oxidation by 0 2' The resulting equation reads: - d rInH /dt = W + k,1 7InH~ n10,. W is linearly 0 1 - - L 2: InH r YIH]2 (n=l.~5 was found from the straight line in the dependent on [I coordinates d,[InH_!Vdt, log,InH_.,). WO = 2.6-1o-9 mole/liter-sec was determined from section cut off by the straight-line on the ordinkte of the IN 1 -12 -1 2 2, Inff -InHil diagram, and k i . 1.2-10 liter /mole see from the slope. 'The same value for ki was also found when oxidizing with a 53- 02 + 47'f, N2 mixture. Measurements at different partial pressures of 0 2 and of n-decane - p-dichloro benzene mixtures of various compositions showed the chain formation reaction to be of first order with respect to the 0 2 concentration, and of second order with respect to the decane concentration. Card -2/3 Mechanism of' chain S/020/62/143/002/01~/022 B145/Bl'16 -1 2 2 k 5.2-10 liter /mole .sec, i. e. a higher value, was established in the reaction in n-decanc - p-dichloro benzene mixtures, evidently due to the polarity of the solvent. There are 3 figures and 7 referencesi 6 Soviet and 1 non-Soviet. The reference to the English-language publication reads as follows: C. A. 114c Dowell, J. H. Thomas, J. Chem. Phys., j2, 558 (10/49). ASSCCIA",'IUN: Institut khimichesk-oy fiziki Akademii naak SSSR (Institute of Chemical Physics of the Academy of Sciences USSR) SUB_..',!TTED: December 11, 1961 Card 3/3 SKIBIDA,, I.F.; MkYZUSI, Z.K.; EMUMLI, S.M. Study of kinetic regularities of conplex chain processes aa a method for determining the rates of formation and consunption of-intermediate products. DokI.4B SSSR 1" no.1:170-172 VV 162. (MIRA 15:5) 1. Institut khimicheskoy fiziki AN &%R. 2. Chlen-korrespondent AN SSSR (for Fmanuelf). (Hydrocarbons) (Chemical reaction,, Rate of) (Oxidation) C.V, ifz":~ 1. Tnsti,,-,t -I.-' b/062163/ODID/00 03/022 - iv!'qvw~za X _ ' tw' 'dibg ts~:~zbli bet s"-_l*:ac#*ity'o A e.'radU &'-I" a7 re '43 lttvraAli6:~:bf ~-tbe':pbrmdd6. radic' witb. C:rease: of Asse bf-th I~Mhllimrffi_ls Ox the bf tlii- &aid fo=ed,- In -the limtitutlib~~Cbmk fWJd'-Akadmdl:'z'~ii:'s~5m -oziAi" af_a cy z' b Mid%W .56iiiid4: US' all'bysics of: 15 0 7_Q P . 910201631148100610211023 B190/B102 AUTHORS: Skibida, 1. P., Kulitskiy, Z. I., Mayzus, Z. K. TITLE: Reactivity of isomeric decanols, the intermediates of n-deoane oxidation PERIODICAL: Akademiya nauk SSSR. Doklady, v. 148, no. 6, 1963, 1358-1360 TEXT: The reactivity of decanols with hydroperoxides was determined from their consumption when added to the reaction mixture. The pure initial product n-deoane was added to the reaction mixture at a certain rate until a stationary concentration C of the intermediate (alcohol) set in. 1 A mixture c~f decane and 0.205 mole/l of decanol-2 was added at the same rate, whereupon a higher stationary conoentration C 2 of the intermediate became established. If, instead of this mixture, mixtures of decanol-4 and subsequently of decanol-5 having the same concentration were added, then the stationary concentration C remained constant. The hydroperoxide 2 concentration also remained constant during the experiments. Hence it L -Card 1/2 S/020/63/148/006/021/023 Reactivity of isomeric deoanols, Bigo/BI02 follows that the decanole used exert no effect on the radial concentration in the system and have the same reactivity. The gross velocity of the formation of the alcohols in n-decane oxidation was found to be vgr - 7-4-10 -4 mole/l min. There is 1 fijzure. ASSOCIATIOYA: Iniititut khimicheskoy fiziki Akademii nauk SSSR (Institute of Chemical Physics of the Academy of Sciences USSR) PRESENTED: YLly 28, 1962, by V. N. Xondratyev, Academician SUBMITTED: July 23, 1962 Vard 2/2 SKIBIDA, I.P.; MAYES, Z.K.; MANUEL', NJL Activation energy of the chain reactions by which alcohols are formed and consumed in the oxidption of no-decane. Dokl, AN SSc;R 149 no.5.-IUI-1114 Ap 163. (MIRA 16:5) 1. Institut khi-icheakoy f'LzW AN SSSR. 2. Chienkorrespondent AN SSSR (for &mmelc). (Decans) (Alcohols) (Chemical reaction, Rate of) ZAIKOVO G.Te.; MANUS, Z.K. Polarity of the medium as effecting the activation energy of the chain continuation reaction in the oxidation of ethyl alcohol and methyl ethyl ketone. DAL AN SSSR 150 no.1:116-119 Yq 163. (~aRA 16:6) 1. Institut khimicheskoy fiziki AN SSSR. Predstavleno akademikom N.N.Semenovym. (Rthy! alcohol) (Butanons) (Oxidaticn) (Activation energy) L 19o14-63 EPF(c)/EWPQ)/EWT-(=)/BD5 Pr-4/Pc-4 RM/'NW/JW/MAY ACCESSION NR: AP3007235 S/0020/63/152/001/0110/0113 AUTHOR: Karpukhina, G. V.; Mavzus. Z. K.; Emanuel', N. M. (Corresponding member, AN SSSR) TITLE: Interaction of two inhibitoralin hydrocarbon oxidation SOURCEs AN SSSR. Doklady*, v. 152, no. 1, 1963, 110-113 TOPIC TAGSi antioxidant, oxidation inhibitoro inhibitor, oxida- tion, hydrocarbon oxidation. hydrocarbon. synergism, synergistic effect, synergistic inhibitor, Neozone D, 2-naphthylamine. N-phenyl-, phenol. 2.6-di-tert-butyl-, benzene, ethyl-, isobutyronitrile. azodi-, Ionol, p-cresol.'2.6-di-tert-butyl-, phenolphthalein. tetraisopropyl-, diphenylamine, inhibitor consumption, consumption rate, free radical,hydrazine. tetraphenyl- ABSTRACT: The consumption rate of two inhibitors (antioxidants) of the fftenol and aromatic amine type in hydrocarbon oxidation has been studied to clarify the mechanism of the synergistic effect of two inhibitoiz 4:,eZ simultaneously. Neozone DI(N-phenyl-2-naphthyl- a-mine)l and 2.6-di-.tert-butyl h0n^1_N_1_F -were used I-o-W -separately &--n-a- simultaneously in ethylbenzenetoxidation initiated with 'Card L 190!1+-63 ACCESSION NRi AP3007235 an azobieisobutyronitrilel d conducted at 70C. This oxidation I Kas the advantage of being an "unbrandhad" chain reac- tion. Changes in inhibitor concentration in the cou::se of oxida- tion were deterfained spectrophotometrically by formation of an azo dye from the inhibitor and added diazotized p-nitroaniline. It was found that a single inhibitor iB spent at a rate equal to one-half the initiation rate, indicating that one inhibitor mole- cule reacts with two R02 free radicals. When the two inhibitors are used together, consumption of Neozone D is slight until prac- tically all of the phenol I is spent. Neozone D is subsequently consumed at a rate close to the half-rate. , This amine-consump- tion inhibition is observed at various ratios and total contents i of the two inhibitors. The same inhibition was observed with other: pairs of phenols and amines; e.g.. Neozone D with 2,6-di-tert- butyl-4-methylphenol (Ionol) or with tetraisopropylphenolphthalein.' Replacement of Neozone D with another amine, diphenylamine, also resulted in considerable slowing of amine consumption in the presence of the phenol. In an attempt to explain this phenomenon, the rate constants of the reaction between inhibitor and RO free radicals 2 Card 2 /J* _a ACCESSION NRt AP3007235 were determined by~the chemiluminescence quenching method (0. N. Karpukhin, V. Ya. Shlyapintokh, N. V. Zolotdva, Izv. AN SSSR, OKhN, 1963, No. 10). It was clearly indicated that inhibition of amine consumption in the presence of phenols in not caused by the dif- ference in the vialues of the constants, i.e., in the effectiveness of the inhibitor. It is assumed that a free radical formed by the reaction of the amine with R02 radicals abstracts a hydrogen atom from the phenol,thus restoring the amine. Hence, amine concentra- tion changes only slightly until all of the phenol is consumed. This assumption was confirmed experimentally by establishing that diphenylamine accumulates during ethylbenzene oxidation inhibited by Ionol and tetraphenylhydrazine. The latter is a source of (C6H029 radicals which form diphenylaminefon reacting with Ionol (by ebstracting Rn H atom from this phenol). Oxidation of the RR,N free radicals does not occur, since the reaction rate with Ionol is higher than the RiR2A oxidation rate. The results of the study may also contribute to an understanding of the synergistic effect of Inhibitor pairs at higher temperatures. Orig. art. has: 4 fl urep and 1 table. 01Y .Card - 3/6:~ EMANUEL$,, N.M.; DRONOVA, L.M.; KONOVALOVA, N.P.; MAYZUS Z.Y,.- SKIBMAY I.P. ----l - - p Antileukemic effect of 2.6-di-tert.-butyl-4-methylphenoI (ionol). Dokl. AN SSSR 152 no.2:481-484 S 163. (MIRA 16:11) .9 PRIVALOVA, L.G.; 14AYZUS, Z.K. 1.1-- --l ~ 4-F .,- " Effect of organic acids on the mechanism of chain branching during oxidation of decane, Iz,AN SSSR.Ser.khim. no.2:281-286 F 164* (MIRA 17:3) 1. Institut khimichedDy fiziki AN SSSIR, ACCESSION NR: AP4024407 9/0204/64/004/001/0082/0090 AUTHOR: Skibida, 1. F.; Hayzus, Z. K.; Emanuel" N. Mo .... ........ TITLE: Reactivity of intermediate materials in hydrocarbon oxidation reActions. SOURCE: Neftekhimiya, v. 4. no. 1, 1964, 62-90 TOPIC TAGS: hydrocarbon oxidation, reaction rateg hydroperoxide, alcohol, ketone, Ro sub 2 radical, ethylbenzene oxidation, decane oxidation, kinetics, aceto- phenone, methylphenylcarbinol, reactivity ABSTRhCT: The rates of reaction of hydroperoxides, alcohols and ketones with RO 2 radicals in the oxidation of ethylbenzene and n-decane were determined by a method developed by the authors (Uspekhi khimii 26, 416, 1957) wherein the rates of formation and consumption of reaction products in an open system may be determined. The various parallel and consecutive reactions by which the chain oxidation of hydrocarbons may proceed were investigated and the reaction rates determined: Card 1/8 ACCESSION UR: AP4024407 0) R If + 0l R + 1101 (Y) 21111 + 01 tv 11 + Iflog+ R 1) R + ot it -10.110, k. c A,&i- 2) Rol -1- Rif 0. 11001-1 + R) ka 3) J10011 --* no + OH T) 110011 + Rif k~" n0+ a -4- HsOl 4) 1100114- RO, 41 Roil + R%*-. CAA,. PRO.& Ir-P k,- 4-) n,con- + not kb 5) Rooll - * k, I 51 Roll 2. 6) llot 4- 1109 Card 2 /8 ACCESSION NR: 4024407 The kinetic curves of ethylbentene consumption And hydroperoxide Accumulation (fig. 1) and alcohol (methylphenylcarbinol), hydroperoxide and ketone (aceto- phenone) accumulations (figs. 2 and 3) for reactions run at 118 C were drawn. Acetophenone is the end product of ethylbenzene oxidation; its rate of consumption k4"(RO2) : 0 kj : 0, and k 3 - 0.82 x 10-3 mol/l.hr. The reactivity of ethylben- zene and its ox datio~ products with R02 increases in the,;Wes eihylbenzene (k 2 : 8.3 x :0-3 hrs- ), alphs-h~droperoxide (k 4 : 7.8 x hrs- ), and methyl- phenylcarbinoi (k4l = 10.2 x 10- ); the relative reactiviries are 1:9.5:12. k6 = 7.8 x 10 0 1/mol.hr. IThe rate consta 2ts of the elementa _rf reactions were determined: k2 : 1.3 x 10 ' k : I .2 x 10 and k W - 1.6 x 10 Ilmol.sec. Th- reactivity of n-decane, its hyMperoxide and its isomeric alcohols formed by oxidation at 140 C was determined (fig. 4). The rate of rVactioQ with R02 radi- cals-ior all the isomers is ~he same. k2(RO2) : 3.8 x 10-4 min L; k4v(ROZ) : 2.6 x 10 ; k4(RO2) = 0.51 x 10- ; hence the rate of reaction of RO increases in the order n-decene, alcohols, hydroperoxide In the ratio of 1:6.3:3. As with ethyl- benzene, the reactivity of n-decane with the R02 radical is less than with their respective hydroperoxideB or alcohols. Unlike ethylbeazene, the reactivity with the decyl alcohols is two times less than with the hydroperoxide. leading to the formation of different products, in this case alcoholat C,-rd 3/8 AG':ESSION NR: AP4024407 R1 H OH R1 If R1 H \I_ I I-. \J-0.+ C 0-0.. C-OH+R- R1 Orig. art. has: 21 equations and 6 figures. ASSOCIATION: Institut khimicheakoy fiziki, AN SSSR (Institute of Chemical Physics, AN SSSR) SUEMITTED; 26Jul63 DATE ACQ: 17Apr64 ENCL: 04 SUB COM NO REY SOVI 007 OTHERI 001 Card 4/8 ACCESSIOP NRs.AF4024407 IMIZ, *- , fig. 1 ENCLOSURE t 01 Kinetic curves ofthe consumption of hydrocarbon (curve 1, external scale) and accumulation of hydroperoxide (curve 2, internal scale). Ethylbenzene oxidized in open system v/V = 0. 102 hr-1. 1180, Card 5/8 ACCESSION NRi AP4024407 ENCLOSIME 1 0 2. W - (8) f ig. 2 Kinetic curves for the accumulation of alcohol (1), hydroperoxide (2) and ketone (3). Ethylbenzene oxidation in open system with ethylbenzene feed (part a) and feed of methylphenylcarbinol solution in ethylbenzene, containinf 0. 106 mol/1 alcohol (part b) and 0. 17 mol. i1. alcohol (part 0. v/V r- 0. 102 hr- , 118c). Card 6/8 ACCESSION NR: AP4024407 ENCLOSVREi 03 Fig. 3. Kinetic curves for the accumulation of hydroparoxida, katona and alcohol. oxi- dation of ethylbenzene in open system with ethylbenzene feed (curves la, 2a, 3a) and 4a -440 feed of ethylbe'nzene containing 0.055 mol/l. acetophenone (curves lb, 2b, 3b), 1--hydro- q071 -4j# peroxide (internal scale); 2--acetophenone; 3--methylphenylcarbinol. v/V : 0.102 hr-l. 4aw -4z# Card 7/8 ACCESSION NR: AP4024407 Ftg. 4. Stationary concentration of alcoholB (1) and hydroperoxide (11) in oxidizin n- decane in open system; v/V 7 2.7 x 10- 1 min'l 0 140 . Section 1--pure n-dacane feed; 2-- mixture of n-decane with decanol-2; in amount of 0.205 iLol/l.; 3--mixture of n-decane with the same amount of decanol-4; 4--mixture of a-decane with decanol-5. V-1 ENCLOSUREt 04 ard 8/8 ZAIKOVJ1 G. Ye.; RAYZUS~ Z.K.; EMPIMELI., N.M. Initiation of chains in the liquid-phaBe oxidation of methyl ethyl ketone and ethyl alcohol. Neftekhiffiiia 4 no,101-95'64 (,'.,IRA 17t6) 1. Institut khimicheskoy fiziki AN SSSR. - ict b" effk,,~ 'In'h bitot-s --in, 6 iddion reac ore has.- ten': at thibi iol- T: - -- H ~- - - - 1 1, ; -~ ---, r-. - : R Ir - " - +R(h~tAmm.+ - 04a : , - - f- - -~Il -1 , '. ~ - - - w - ANDRONOVY L.M.; EYJNUEL', N.M. Kinetics of oxidation of aqueous solutions of glycer-oldehyde by molecular oxygen. Izv. AN SSSR. Ser. khim. no.9-.15,19- 1523 165. (MIRA 18:9) 1. Institut khimicheskoy fAziki AN SSSR. -~66- ACCESSION.NR:: APS021420 a:3m during oxidation itbout tbe:*:_add3*Ltio_-n:of the products bt of: n-~decane-w Addition 6 ~JoUthe ~alc6h6l vas, -found' to decrease c6n6idei"Ij-the activity- Of the radicals prop. e- Oxi RD with ~th daticin chains. The-radicals-formcid byltha'reaction~of 2- the _ alzofi6l'.. are 5't 2times less active.' than -the RO '- radicals -The -rea6tiOik Of R02- 20 Witl the alcohol e represerite as may b f0 It* + C H OH OH) -radical.- In the latter, substituted for th Th u B the R02- rad cal-is' an . J~ OL-_ 0 form-d- which-16 were the activity of I intraradical iy"em~ bond ~mayl e thii Card Oli in ~hie f i5i7&t cals 'ue-n-dec-and .4 00. -66 t -dro b ca 6f hy Ta_ e:-And- e- a ecular-reac ion- e dki --hydrdbarb6n. As tween-lij-dr operpx1d th oxidat -ion- -increas egy- t SP41 i t -Mee anism ecolneu more ~CcjmD e . he- -0 -,ac at. ~-~Of rganic ids lle_rdaction:pioduct~) le-AdS.-to a:marke'd. inw amone -1 'It ht,- b ed ~lhwl;':th - ati~- 6f-- h~droperoxidp,-~ deov --to rallica 3, - on 0 OS pr p irmliy clabbioositio-IX-bf. an--intarmediata- o-omp etvidenAvhe )~y~roperpxide::: 0 i3y develotmeht- ot-~,,u~terMAecul:aa~-_ 6& _-.bonds.'~-,~To:tebt; fhe-- Wthors~~~ed.: the, dependence- of - dooomweiti. -rate on- aoid': on this I MAYZUS Z.K.; SKIBIDA, I.P.; FMANUELI, N.M. P Mechanism of the catalytic decor-posItion of hydropercarides under the effect of copper stearate. Dokl. AN SSSR 164 no.2:374-377 S 165. (MIRA 18:9) 1. Chlen-korrespondent AN SSSR (for Emanuel'). L h2 -66 7-r,1'r(m)ZmT0),'T 1,11' ( c It AP6021960 SOURCE CODE: UR/0030/66/000/006/0076/0080~ AUTHOR: Mayzus, Z. K. (Candidate of cherp-ical sciences) ORG: none TITLE: Symposium on chain and fre-e-ra-d4-c,-il'.re-,ici,ion-. SOURCE: AN SSSR. Vestnik, no. 6, 1966, 76-PO TOPIC TAGS: chemical confcrence., radical pcolynieri7~,t'ion, oxid-ition k"netirs, chemical personnel, free radicil, re;iction, cheniilcai reaction, r-action mechanism, polymer-Lzation k.inetics, chemdcnI detection, chemical syntly--sis posiwn on ch~~n Te,.3-ctions was held in Moscvw ABSTRACT: A sym ,from 11 to 14 Aprl-l.-Yhe sym-pos ium was dedicated to -Academician -N. N. Semenov on the occasion of his 70th hirthday and 50th year of scientific activity. Semenov himself made the opening address to some 500 Soviet and foreign scientists by outlining Lhe history of development of his theory of chain reactions and combustion processes and by discussing the .theory of branched chain reactions, including the latest developments wnich have resulted from experimental work at the Institute of Chcmica_~ _f~ ~si~s, AS US SR. A significant new contribution to the theory of branching was made when Semonov introduced the idea that molecules in the excited state participate in branchIng. Semenov also a4vanced a hypothe- sis of the exciton mechanism to explain low-Leipperature". ipoly-merization in the solid phase without activation Pnergy. Card L 42118-.'~6 _ACC_ NR. AP602-1960 In addition to others branched chain react ions; in the gas phase were In._.A. B. On6titute of Cf,emical treated in several papers: Nalbandy, Physics, AS USSR), and__Yoy~vodskiy_,__V. V., and V. 14. Panfilova (Institute of Chemical Kinetics and _9ombustion, AS USSR, Siberian Departrent) rarefied flame reactiijns,'bf sulfur and sulfur compounds, and bydrogen with hydrocarbon additives, respectively; Sabo, --- Z.-(Institute of Inorpanic -garlan AS) -- d~ 91. ion reactions. and Analytical Chemistry, Hun comp. t o______ Liquid phase reactions were discussed in a scries of papers, the mos, interesting of which were: Emanue I ' , N. -r-1. ( I ns t i t u t e o f Chemi c a 1 Phy s i cr, , AS USSR) -- oxidation of organic compounds, specifically mild oxidation of low-molecular weight compounds under pressure and co-oxidat~on of aldehydes and olefins, which yields large quantities of epoxy~tompound-; ,NeyTan_, M. Yu. A. Shly i~ov, V. B. Miller, and V. P~_dcv (InstituLe of Chemical Physics, AS USSR) oxidation inhibiting activity-of biphpnols with narrow-spaced active groups; Roginskiy, S._ -Z., Andrianov, T.-T.,and Yu. N. Rufov (Institute of Chemical Physics, AS USSR) -- the role of oxy- gen-free radicals in hydroperoxide formation and the discovery of new solid catalystsqand inhibitors of this process; Yenikolopyan, N. S. (Institute of Chemical Physics, AS USSR) the chain-transfer with breaking mechanism of the formation of heterochain polymersqby ionic polymerization;! and Dolgoplosk, B. A. (Institute offetrochemical SXnthes1s1V4.*4.&.Y. y", AS USSR) -- stereo-specific polymer~zatiokA dAM .Topchi of J~jt i - ~cally p6lybutadiene via r-allyl and w-ctotyl complexesof tran &Le t a IS Card 2 /1 4~ - L.M.8-66 ACC NRi A P6 0~1_9_6 _0 Free-radical reactions were, stualed, in addition to others, in the papers by: Kondrat'yev, V. N. Academician -- review of the state-of-the art of research with emphasis on kinetic measurements of elementary free- radical reactions, specifically of thermal peneration, exchange, and re- ;combination reactions; Azatyan,.V. V.,and Dodonov, A. F.PG. K. Lavrovskaya and V. L. Tallroze (Institute of C ical Physics, AS TISSR) -- determina- ,tion of rate constants of the reactions of atomic hydrogen, oxygen, and hydroxyl radicals and of atomic hydrogen with ethylene molecules, respec- tively; Shlyapnikova, N. L., A. P. Ballod, and V. Ya. Shtern detection ,of CH NO NX CH ON02. in products of the 20, CH30 radical C1130NO, and CH3 reaction of methyl radicals with nitrogen dioxide; Bagdasar'yan, Kh. S.. (Karpov Physicochemical Institute) -- the problem of reactivity of free radicals; Freydlina, R. Kb (Institute of Heteroorganic Compounds, AS USSR) -- investigation of the ree-ra ical mechanism of telomerization and intramolecular rearrangement of free-radicals; and Razuvayev, G. A., and N, S. Yyazanki (Laboratory of Polymer Stabilization, AS USSR) -- new research data on chain reactions with organometallic compounds, e.g., bis-[triethylgermyl] cadmium with_M~~to yield J(C If Ge)2'C'2 at -75C. 2 5) 3 [ATD PRESS: 5030-F] SUB CODE: 07 / SUBM DATE: none Card 313 af 6030451 SOURCE CODE: UR/0204/6610061004iO6O3/060 AUTHORj Karpukhina, GO V.; Mayzus' Zt-J.6-4, Hatlyenko, L. 1. ORGt lna&itM&e of Chemical Ph_ysics, AN_SSSR (Institut khimich.eskoy4e fiatki AN SSSR) TITLEi Interaction of phenol and aromatic-amine inhibitors in hydrocarbon-oxidation reactions SOURCEt Neftokhimiy&, v. 6, no. 4, 1966, 603-607 TOPIC TAGSt oxidation. inhibition, antioxidant additive, combustion modifier, synergism Y n & k VL POE A309-)~reff #V~010IC09A- ~S 7'#q J3 / J- / Z A 7-,,4V ABSTRACTs A relations'.ilp has been established between the occurrence of synergies between two oxidation inhibitors-an aromatic anine (ASH) and an alkylphenolA(PhOH) -and the structure of the alkylphenol. This synergism Is assu:;~ to be due to a free-radicaltreaction of the two Lnhibitorse MaH + ROO 4 Am- + RO H (1) 2 2 An* + PhOH A=H'4%+ PhOe. (2) -L 43750-66 ACC N1, AP6030451 The effect of phenols having different substituents ortho or par& to the OH group, in conjunction with N-phanyl-B-naphthylanineq (Neozont 4) was studied in the azebtalmobutyronitrile-initiated low-temperature (60-700 oxidationiof ethylbensene,lby a chesiluminescenne technique &4 and by chemical analysis. It was sh6wn that the sypergion.occur in the case of o,o'-dialkylphenole but not in the case of o-alkyl a:d nonsubstituted phenols. This was attributed to the fact that the rste~ of &nine regeneration (reaction (2)) Increases with increasing PhOO radical stabilityg which in turn increases with increasing steric hindrance of the phenol's OH group. A relationship was also estab- lished between the inhibitor effectiveness of the phenols [in the absence of the amine) and their structure. The criterion of inhibitor effectiveness used was the constant of*the'reaction of the phenol with ROJ radicals, The activation energy of the reaction of 2,4,6-tri- tert-butylphenol with ROi radicals was found to be 3.4 kcalluol. The U -- V__ .- - - A-6 -_ - i:ho__r_i7_ihank N. -k.-Emanuel , A7. A. Bailin . a-n-d- V.- V-. fersEO_-vf_or i- & cussing this study. Orige art. hass 4 figures. ISM] SUB CODE101.116 21/ SUBM DAM '02Jul65/ ORIG REFS 005/ OTH REF: 00 ATD PRE6S11 5076 0357-66 '~Cc ` NRI AP6013383 constant.,for the formation of t6l complex N 6910 -5 exp(IGOD/RT) the equil"Aui Tbe~results Indicate that-tbe great effectiveness of cobalt lt as a cata- clue to the(,hIgt value,of the rate constant of.deccmpositic Le hydro ~IySts 2*8, O'njf t t ide.into, radicals '1whi6h is almost 163-~.tilies. greater. than the te constant of perox ec~poilii-on in thwabsen6e of catalyst. Orig-4 art has t 3 figures, 10 '. ' F SLT - OD 0?/ SUBM DATti'---""--04DecS4 REF: 003 4 . 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