SCIENTIFIC ABSTRACT KOVBUZ, M. A. - KOVDA, V. A.

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• Collection: Scientific Abstracts
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• Sequence Number: 19
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

S/08 61/000/020/076/oag
B1 o6YB1 47
AUTHORS-. Kuohers Re Yurzhenkol A. I.
TITLE: Decomposition of isopropyl benzene hydroperoxide during
hydrocarbon oxidation in a homogeneous liquid phase or in an
emulsion
PERIODICkL% Referativnyy zhurnal. Xhimiya, no. 20, 1961, 321, abstract
20L46 (8b. nauahn. rabot. In-t Fiz.-organ. khimii AN BSSR,
no. 80 ig6o, 22-31)
TEXT: The conversion degree of isopropyl benzene (I) into hydroperoxide
(HP) at different oxidation degrees of this hydrocarbon was investigated.
HP was found to be the only oxidation product in the initial stage of
reaction. When the oxidation takes place in an emulsion, the reaction is
more intense, and higher concentrations of HP are reached. A study of HP
decomposition during the oxidation of I in a homogeneous liquid phase or
in an emulsion indicated that rate and meohanism of HP decomposition vary
with the degree of oxidation. When the oxidation takes place in an
emulsion, the HP decomposition in the oleophase has a similar course as
Card 1/2

8/08 61/000/020/076/089
Decomposition of isopropyl ... B1 06YB1 47
during the oxidation in a homogeneous liquid phase, and the rate constant
of HP decomposition drops with progressing reaction. In the aqueous
phase, the decomposition of HP is monomolsoular throughout the oxidation
of cumene in an emulsion, and the decomposition constant rises with
increasing degree of oxidation. If the oxidation in a homogeneous liquid
phase is stimulated with cobalt stearate, the decomposition rate of HP
rises, and by-products of the reactions are formed in a large quantity.
After the precipitation of the catalyst, monomolecular decomposition aets
in. The results of the investigation can be explained well by a radical
chain mechanism of HP decomposition. [Abstracterts note: Complete
translation.]
Card 2/2

KDVBUZ, N.A., KUCHIR, R.V., BUGROVA, S.M.
Chromatographic determination of isopropylbenzene during
the process of its oxidation. Zav.lab. 26 no-7:816-817
160. (MrRA 13:7)
1. I'vovskiy gosudarstvennyy univereltet im. Franko.
(Benzene) (Chromatographic analysis)

KUCHER) 4.V.;-KOVBUZ, M.A.; KAZIMIN, S.D.
Alkaline oxidation of isopropfLbenzene. Ukr.khim.zhur. 27
no.5:658-663 161. (MM 14:9)
L Lvvovskiy gosudarstvennyy universitet im. 1. Franko.
.t (C-umene) (Oxidation)

OCHER., R.V.- KOVBUZ, M. TEODOROVICH, M.Xc.
Chromatographic separation of meta-diis-opropylbenzeile hydroperaxides.
Zav.lab. 27 no.1181331-1333 161. (Iffm 14: 10)
1. Llvovskly gosudarstvenn raitet imeni I.Franko.
(Benzene) YINVOPecroxide)
(Chromatographic analysis)

S/080/61/034/0()3/009/017
A057/A129
AVMORSs Kucher, R, V,.,,Kovbuz, M. A., Teodorovioh# M. Ye.
TITLF.t. On thapurIfication of isopropylbenzene by adsorption
PEMODICALI Zhurnal prikladnoy khiuiii, v. 34, no. 3, 1961, 598 - 603
TEXT: A method for the purification of isopropylbenzene by means of adsorp-
tion was developed to improve the oxidizability of the latter in liquid phase
autocatalytic oxidation processes. These processes are very sensitive, especially
at the beginning of the reaction, to the presence of impurities in the hydrocarbon.
Usually an aoid-alkali purification is applied, eventually with subsequent boiling
over sodium metal, as recommended by D. D. Grant and C. F. Tipper (n6f. 4: J. Chem.
soc., 64o (1955)]. But also several adsorption methods were suggested in order to
remove impurities from hydrocarbons, as isopropylbenzene or others by 0. A. Kolma-
kov et al.-[Ref. 92 Tr. po khim-. i khim. tekhn., GorIkiy, 1, 36 (1958)] or N. D.
Kazakova and V. 0. Gutsalyuk [Ref. 10: Izv. AN KazSSR, ser. khim., 1,,,, -99--(1958)]
and also in the Canadian patent 509870. Thus in the present work tl~e 'adsorption
was investigated of somo-substances dissolved in isopropylbenzene on ACK (ASK),
ACM(ASM) silica gel, aluminum oxide "for chromatography" and two types of carbon
Card 11

S/080/61/034/003/009/017
On the purification of isopropylbenzene by adsorption A057/A129
black (from Dasha and Ufa). Also the oxidation rate of isopropylbenzene after pu-
rification was estimated. The adsorption of the impurities - thiophene, styrene,
phenol, acetophenone and dimethylphenylearbinol - from isopropylbenzene was studied
by the dynamic method. The amount of the non-adsorbed Impurity was determined by
means of an W'rFx--2 (ITR-2) nephelometer. Aetivation of the silica gel was carried
out in the usual way by gradual drying at 4o, 60, 80 and 1100C according to E. Hh.
Iskhakove et al. [Tr. Inst. ne-fti AN SSSR, 12, 35 (1958)]. The experiments on ad-
sorption of a non-saturated oom-paund (styrene) showed highest adsorption on carbon
black. Because of the easier handling, gra=lated carbon black was used in the
further experiments (seetabulated data). Aluminum oxide showed a low adsorption
capacity related to non-saturated compounds (styrene) and also for oxygen-contain-
Ing compounds (acetophenone, dimethylphenyloarbinol). Therefore aluminum oxide was
no more investigated. ASM silic~&l gel had a high adsorption capacity for all in-
vestigated impurities, but it adsorbs also isopropylbenzene, while ASK silica gel
does not adsorb the latter, but shows low adsorption capacity for styrene. Conse-
quently a mixture (2 s 1 by weight) of ASK silica gel and granulated carbon black
was tested with lsopropylbenzene containing: 0.01% styrene, 0.01% dimethyliphenyl-
carbinol, 0.01% phenol and 0.01% acetophenone. The obtained results were compared
Card 216
0

S/080/61/034/003/OeVO17
On the purification of isopropylbenzene by adsorption A057/A129
with-va4ues obtalned on.pur6,ASM silica gel~,.-aensecutive-adsorption of granulated
carbon black on ASK and ASM silica gel, and the mixture 2 t 1. It can be seen
from Fig. 3 that best-results were obtained with ASK-earbon~,bltck~mixture. Hence
the latter is the optimum adsorbant for the purification of technical grade Iso-
propylbenzene. Regeneration-of the silica gel is carried out by washing with boil-
ing water 6r steam and subsequent calcination. Kinetic curves (Fig. 4) on a0cumu-
lat~qn of hydrogen peroxide in liquid-phase homogeneous oxidation of.19opropyl-
benzene obtained afterr'purifteat-ion by the acid-alkali method 5how that a lower
-reaction:-capacity is-obtained in comparison to -the product purified by adsorption
method,5ii 5~-kg -of -ASK silica gel.-and 2,5 kg of oarbon-black are necessary for the
purification of 100 1 of isopropylbenzene. There are 5 figures, I table and 12
referenoesi 11 Soviet-bloe and'-1 non-Soviet-bloo.- The referencerto the English-
lauguage,publication reads as followat D. D. Grant, C..F. Tipper, J.-Chem. Scc.0
64o,
ASSOCIATION:. Kafedra fizicheakoy i kolloidnoy khimii Llvbvskogo gosudarstvennogo
universiteta ime 'ni 1. Franko'(Department of PhVaical and Colloid
Chemistry of the L2vov State University imeni'l.-Franko)
SUMV
, MDt May 1% 196
Card. A/6

OCHER, R.V.; KAZIMIN, S.D.; KOVBUZ.. N.A.
Characteristics of salt catalysis during oxidation of alky2
aromatic hydrocarbons, Izv*vya*uchob*zav*, khim.i khim.tekh. 4
no.6-.971-976 161. (MY%A 15:3)
1. LIvovakiy gosudarstvariVy univeraitet imeni Franko, kafedra
fizicheskoy i kolloidnoy khimii.
(Salts) (Catalysis) (Oxidation) (Hydrocarbons)

KUCHER) R.V.; KOVBUZ, M.A.; BUGRGVA,, R.M.; VASILIMICH) I.M.
Liquid phase oxidation of isopropylbenzene at high pressure. Zhure
prikl.khim. 35 no.1:170-176 -Te, 162. WMA. 15:1)
1, Llvovskiy gosudarstvemW universitet imeni I.Franko.
(cumene) (Oxidation)

BOLDY.U'V, B.G.; KOVBIJZ, M.A.; TROFMOVA, T.A.
Thiosulfonic acids. Part 10: Reduction of thlc3u,f-~,,~',: a,:41d
esters on a mercury dropping electrode. Zhur. ob. 35
no.1:22-27 Ja 165. 18:2,1
1. Llvovskiy politeklinic:heskiy institut.

EOVCH/t, V.
Improve the establishment of work norms for foundry work.
Sots.truA 4 no.7192-93 J1 '59. , (MIRA 1300
(Founding--Production standards)

KOVCHA, V.
Developing norms for the number of employees. Sots. trud
no.1004-96 0 162. (MIRA 15310)
(Industrial management)

KOVCHAVTSEV. F.G.. inzh; KOSTRYGIN, V.A., inzh.; STOROZHUK. K.$., inzh.
Reconstruction of RVS-110 valve-type discharger. Blek.sta. 30
no.2:65-66 F 159. (MIRA 12:3)
(Bleotric power distribution--Bquipment and supplies)

AVLAVIDOV, T.; KOVC11AZOV, G.
. --- - --- . .....
Results of the eradication of taeniasis in Varna District,
Bulgarian Ppople's Republic. Med. paraz. i paraz. bol. 34 n0-51
572-575 S-0 165 (MIRA 19:1)
1. Okruzhnaya sanitarno-epidemiologicheskaya stantsiya., V"aima.
Sulnitted June 9, 1965.

KOUH-E-OuIRSKI, T.
I
"Rationalization work in the Ores and ! 0t;AlIuI',;:y Admini.-tratioll.
M
p. 8 (Ratsionalizatsiia, Vol. 7, no. 11, Oct. 1957, Softia, bul,-aria.)
"Results from the competition of young rationalizers.11
p. 13 (Hatsionalizatsiia, Vol. 7, no. 11, Oct. 1957, bofiia, 'Dulgaria.)
'-'onthiy Inde): of Past European A.-.cession (EEAI) LC, Vol. 7, No. b, June 195b.

ler'110IM",A-PSKT) T.
t'How the prcposed rationalizations are tested in the Lead-Zinc Plant."
p. 12 (Ratsionalizats-lia, Vol. 7, 110- 11, Oct. 1957, Sofiia, Dulgaria.)
M,onthly Index of East European Accessions (EFAI) LC, Vol. 7, No. 6, June 105E.

KOMIMARSKI, T.
liew method for finishinf, the mercury valves of electric-current rectifiers.
p. 20 Raticnalizatsii Vol. 8, No. 4, Apr., 119~8-. Sofiia, Plulj-,aria.
Monthly Indey of East E--ronean Accessions (Ej'-:AI) LC, Vol. 7, No. 10,
oct. 9

KOVCHEGARSKI T
TECHNOIMY
Periodical: RATSIONALIZATSIIA. Vol. 8, no. 6,, June 1958.
KOVCHEGARSKI, T. Work in concentration plants and tasks of rationalizers.
p. 15.
Monthly List of East Fluropean Accession (EEAI), LC-., Vol. 8, no. 2,
February 1959,, Unclass.

'Rol 0;
Z a C rl
rA Fir,
"f,k lm,,

KOVCHINP 3.tt.
Analysis of some feedback networks for stabilizing the speed of
elsotriz drives. Tmdy LPI 240:39-47 164. (MI-RA 17. 11)

GRUZOV~ Vladimir Leonidovich; NOVIKOVA,Galina Ivanovna; KOVC9114s
S.A., red,
[Transistorized frequency converters for automated a.c.
drives] Poluprovodnikovye preobrazovateli chastoty dlia
avtomatizirovanrWkh elektroprivodov peremennogo toka.
Leningrad, 1964. 24 pa (MIRA 18:3)

AUTA. J:
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310201621146100110091016
B108/B102
ilanasyuk, V. V., Kovchlk, 6. Ye.
41;rt'cct of n surface fictive medium on the surface energy of a
brittle body
nnu~ SSIA. Dol;indy, v. 146, no. 1 1 196"?, v - 1)5
T I T -, Tho cf-.'ect of -:iLtQr-on, the _development of cracks -in silicate Glass
wFAs studied. The surfice enerCy of a sample plate with thickness h is
(1 *- 2 )P2 JCEh 21,., r-bere E is Young's modulus.
V, N v is Poisson's ratio,
F the critical stress at t-hich a crack of length '21 k starts to expand.
Tiluissr can be calculated on reading P from a strainegs. e. The authors
de air t-a- wat r r ) of glass call-
terrined the surface enerry in 0) and in ~ IV
03, 0. I AIA > Fcc()a 1" 800
I, The cornpo. of co uW4
gAtAIA it, the COJUAds is 4
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In the K)kmclz "is differs front that of politul and
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KOVDA 3 V. A.
"Principal Results of the Works of the Dokucha5,ev Soil Institute and Uzbek Affiliate
of the Academy of Sciences of the USSR in Goludnaya Steppe in 1941,11 Pochvev., No 7,
19h2

KOVDA, V. A.
"Soil Cover of Iran." Pochvoved., No 12 1944

w ,r 119, r-W-9 -X v n IV
F
ir 'T
tj
P- Ant t~!,
The dynsuilu of c4lislimily in soil gol
OUR upoa UOSR.
L.~3itivirysin end T. A. OvvWxmt.
1044. No. S-11, 04
I to
iff IS&tbm bwwwa trwq Wk. t *U th""h
see Tht, hiq~"t bicrives-C in P111 tak" place in the Mirfam bisir.
mi. lb- Wmmses W alky. am drietcrims to wtton.
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KOVDA, V. A.
"Factors of Soil Fornitition.,11 Pochvov. TJo 3, 1946.
V.-%'.Dol,-uchayev Soils Inst., AS USSR.

KOVDA,, V. A.
"Processes of Soil Formation in Deltas and Bottom Lands of the Rivers of the
.1 3 osium 14, pp 101-123, 1946.
Continental Regions 11 Problems of Soil Science Synp
U-3213, 3 Apr 53

XOVDA* VIKTOR ABRAMOVICH
KOVDA, VIKTOR ABRAMOVICH. ProizkhozhdeuIe i rethim zasolennykh pochv. Moskva, 1946-47.
2 re (Akademila Nauk Soluza SSR. Pochveanyl Institut iment
V. V. Dokuhaeva.).
Su=ary in French.
"Spisok o9novuoi ispoll'zoZannol literatury i ma,-
terialovot To 2t P. f35-Q/-372.
Cu DA ME EN DLC.I Unclass.
SO: LC, Soviet Geography, Part 1. 1951, Uncl.
"Genesis and Process of Accumulated Salts in Soils,"

11 W " t, it to a TIT", t Th Aw- Mr- T i ID P v $1 14 b Ad v Is 0 th, it 0 1? It V:4;w
A- _C- JD_ f IF I- t-A-1- J_#
Tile PrWON W W1 "Mmulabon i "ftoov~6) 14 "IN
slad wititts. V. A. KOWA. 1144otr (V.&SR.) 1947.
comptvaed of 3 branches: ~lt laecunsulatiti in around
W%Iri%. in S.41 linjel., land in the %4jd PhAle Of the 51111
The plax. limits Of 0411 arvulnulAtion ill the ground %ill,
09 Jr!~ a depend on the Clittl9fic conditions. I" Sibcd& the H3111
6 40-M I. IM I.; In the lower Voliva. 1013-150
in ushellistan, Tadithiltistan. and Azabaidshan, 200-
so J 11 220 g,/1, The accumuiation of NaCl In ground waters -!zoo
follows the equation y - 18ft, whale y - milliequiv. CI.
9A of residual Wids; les Itum I I to 14.
o The arcumuladon of sulfate 'follo"W"s a more complex
equation. At small coucits.. the accumulation folll%~
parabolic equ4tion: F - vr2px, Where CMcn. W
in mittlequiv.. jr - residual FAIds. At higher concri..,
C the accumuWimi of 504 in ground waters does not tak,- "XOO
b1 place, and tht cwcn~ Of S04 IS txplexved by the equiati.n
yjV, whm jv values vary from 12 to 800. The rcla-
tion "I the conen. of ails ill the ground waters to that of
the *oil Wn. is discussed. with refffeacc to OMPOnal va"Ll-
tiolls, depth of water table. meteorologic conditions. mid
concn. ni salts in water. it 6pointtd out that the "I'll.
col)(71). of Nits in the "a solz~ ISU04W g41. I.S.j. to
A S6 -SL *EtKtLtrGKAt LIT(ROUIZE CL&1jtFiCAljC% i
boo
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U Sal 001111% F 4 aI j WWT_~-N'Wo M -loaf!) a t
9 P CIP it at Ot Is a 9FAK it tt it 'U4 n I tak
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VO 0 99 0 e 0 0 00 a 00 9-:1 :IA-*-* 0 0 00 0

KOVDA, V. A.
"Stabilization of Soi-I Grounds by Calcination and Heating," Pochvoved., No 5, 1947

NOVDAY V. A.
"Processes of Conteq)orary Salt Accumulation in the Soil," Works of the
Soil Institute im. C.C.Dokucha3rev, Vol. 25, pp 60-82, 1947.
U-2392) 22 Sep 52

KOVDA, Y.A.; KCHAROVICH, M.A.; LIKMOMEYN. Te.S.; SEGAL. B.I.; VAVILOV,
14 akademik, redaktor; 3RUYSVICH, N.G.. akademik-rodaktor; MMIN,
I.P:, akademik, redaktor; VOWIN, V.P., akademik, redaktor; D~BMIN.
A.M., akademik, redaktor; MISTS, I.I., skademik, redaktor; CROLI,
L.A.., alcademik, redaktor; POGORIONSIATA, TS.M., redaktor lzdatell-
stva; SHKOLINIKOVA, S.A., tokhatchaskiy reclaktor
[220th anniversary of the Academy of Sciences of the U.S.S.R.: in
two volumes] 220 let Akademii nauk SSSR; v dvukh tomakh [Red.
kollegiia S.I.Vavilov i dr. Boat. V.A.Kovda i dr.3 MoBkva. Vol. 1.
1948. 430 P. (HLRA 9:10)
1. Akademiya nauk SSSR. Yubileynaya sesetya, Mosbow, 1945.
(Academy of Sciences of the U.S.S.R.)

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KOVDIII, V. A.
Kovc]a, V. brief o-Ut-Une of the ~cz)_IcEy E.m` 0- --Izr
Tru,'T Fochv. ir-ta. -5:_ D-o,-.uch,:yev&, Vol. X.-:
ix
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KOVDA, V. ".
Kovda, V. A. "Ground water of' the Hungry Stci~pcll, Trudy Pochv. ln-ta ij7). pcAocbi~yevu,
Vol. XXIX, 194V, p. 43-71., - Bibliot: 19 itcila-.
SO: U-2888, 12 Feb. 53, (Letopist Zhurnal Inykh Statcy, No. 2, !'~4-9)-

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