SCIENTIFIC ABSTRACT ZHAVORONKOV, N.M. - ZHAVORONKOV, V.G.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R002064610013-8
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: July 19, 2001
• Sequence Number: 13
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

82733
S/089/60/009/002/004/015
B006/BO56
1~ 9, 6 Wo
A
AUTHORS: Sevryugova, No No, Uvarov, 0. V., Z_havoronkov, No Mo
TITLE.: Separation of Stable Boron Igotopesh
PERIODICAL: -Atomnaya energiya, 19609 Vol. 9, No. 2, pp. 110-125
TEXT: The present article gives a detailed description of the methods of
'separating the boronAieotopes B10 and B11 which are interesting for in-
dubtrial purposes, The molar.ratio of the two isotopes in naturally,occur-
ring,boron is about 20..*.80* The various methods furnish somewhat different
valuesq and various authors also,obtained different results by one and the
same method (on BF ) (of. Table 1). These problems are briefly dealtwith
3
inthe introduotiont after.which the electromagnetic method, the method of
thermal diffusion, and the method of diffusion in the vapor current of an
,inert-substanoe are.discuesed, while in the following the two moot impor-
tant methods of industrial separation of isotopes are explained in great
detail: the method of chemical isotopic exchange and the method of recti-
fying boron halides. Go M. Panchenkov, V. Do Moyseyev, and A. V# Makarov
Card 1/4

82
separation of Stable Boron Isotopes SIOBF60 002/004/01.5
B006 BO 5~009/
(Ref 31) were amonIgthe 'first whosuggeated using the chemical exchange
between boron halidee and,organic boron halogen complexes for the Bepara-
tion of boron.isotopes. The,separation factor a is comparatively large for
processes and is, on the average, about 1,03. Its tomperatura.de-
pendence forlhe systems (C6H 5) (CH3)OBF 3 1 BF3and (C 4H9)SBF 3 -BF3 is
given in Tables 2 and 0 3. For the,last-mentioned system.a attains a maximum
value of 10054 at -20 0. The a-values determined by various authore by
means of different isotopic exchange methods are given in Table 4. The
grave disadvantage of the method consists in.the high molecular weight of
the complex. This is the reason why industrial plants find..it less economi-
oal towork by this method* The rectification methods are considerably more
simple, but, in this.case, the separation factor is small. In BO (CH
3 Y29
e.g., it is only 1.001; In practice, only BF and BCI are used, which
3 3
have a somewhat higher a. In t~e f at oaae, the temperature dependence
of a,is given by a - 1.0488 e-0-17YT, and in the second case by
-2-33/T
a, 1.0112 e The temparature-And pressure dependence of a
Card 2/4

82733
Separation of Stable Boron Isotopes S/089/60/009/002/004/015
B006/BO56
in BF rectification are,illustrated also by the numRrical values in,Table
6-and, the a(T) curve-in Pig. 30, a(T) for BCl rectification is.shown in
3
Fig 5. The greatest disadvantage of the rectification methods consists
in the fact that, for,the purpose of increacing up it is necessary to
work at the lowest possible -temperatures, which reduces productivity be-
cause of the consumption of liquid air. B01 rectification seems.to be
3
the most-prbfitable method; though the separation factor is only about
1.003Y this value may'be attained at atmospheric pressure and room tem-
peraturs. A .large.table.(5) shows the characteristics of the individual
for rectification- and isotopic exchange methods (taken from
Refs- 40-47). The most important data of the various methods are compared
in Table 7. There are 7 figures, 7 tables, and 71 references: 23 Soviet,
20 Uss 5 Germany 4 Britishv 1 French 6 Dutch, 2 Swedish, and I South
African.
CarcV. 3/4

8/074/60/029/009/002/002
B013/B064
-AUTHORS: Sakodynskiyi:K.~'I., Zhavorjmkay,__N~M~,
TITLE: Two-temperature Methods of Producing Heavy Water
PERIODICAL: Uspekhi khimli, 196o,. Vol. 29p No..9, pp. 1112-1135
~TEXT: The present survey deals with methods of producing heavy water, -the
main laws of two.-temperature methods, and the systems of the substances
used.~Methods of producing heavy-water are given.in a number of surveys
(Refs. 12"32) and In a monograph (Ref 33). In principle, all methods of
isotope separation are suited for..the'concentration 'of heavy water. The
following methods have.found industrial application: electrolysis of water
oombined.with the isotopic exchange between water and hydrogen, rectifica-
tion.of water, low-temperature rectification of hydrogen, and tvo-tempere-
ture exchange between water and hydrogen sulfide. The two last-mentioned
methods have gained eydr-inareasing4mportance during the past ten years
(Ref* 34). The principal methods given are usually combined with one
another according to the operating conditions. All productJon proces3es of
D 0 can be divided into Independen methods, and into methods depending
Card,1/3

--- - - -----
Two-temperature Methods of Producin Ig Heavy 8/074/60/029/009/002/002
~Water B013/BO64
on the production of other substances. The distillation of water and the
two-temperature exchange between water and hydrogensulfide belong to the
-form.er. The othere.comp,rise all the other methods whose capacity is limit-
ed by the amount of hydrogen production for works of ammonia synthesis.
Table. I gives some main indices of the different methods of synthesis.
Thetable indicates that thetwo-temperature exchange and the low-tempera-
ture rectification of water are the most favorable methods from the
economic point of view. These two methods are applied in several countries
on an industr. a
'al a ale (Refs. 11, 43-47). A list of the plants in operation
and of the biggest projects of heavy-water production is published in
Ref- 30. Refs. 34, 48 49 give data on the production of heavy water in
several countries.,.The main laws of the two-temperature method are describ-
ed (Figs- 1-7 and Refs. 12, 19-25, 30t -319 35, 50-62). This method can be
in two ways, 1),by. cascade-like arrangement of individual pairs
of multi-staga.apparattzs; one 9f the apparatus operates at a low, the
othar.at a~high temperature (Fig. 1)s 2) by,linking two multi-stage,
columns one 6f,which operates at a high, the other at a low temperature
(Fig. 2). Requiremnnts to b,e met in selecting the systpm of substances
are given. Tablo 2 gives a on* of some systems of substances. It
Card 2/.5

Two-temperatu-,e Methods of Producing Heavy 5/07~/60/029/009/002/002
Water B013 Bo64
s.hows, tha t the highest . d eu teriuz4 Yield, ~is obtained.when applying the
systems water hydrogen,. water - hydrogen halide, or ammonia - hydrogen.
The following systems aredescribed: water - hydrogen; Tables 3, 49 Figvo~
8, 9, (Refls._12, 15, .19, 24, 36, 45, 57 66-76); ammonia - hydrogen: Table
5, Figs. 10-12,(Refs. 33, 77-84); water,.: hydrogen sulfide- Tables 6, 7,
Figs. 13, 1 14 (Refs. 12,-15#19, 1 35Y 409 45 ' 489 51v 57,'73, 79, 85-127)
other systems: Tables 8-10, Fig. 15 (Refs. 9,il8,-35, 62-64, 128-132).
1. V. Kurchatov, A. M. Rozen, Ya. M. Varshavskiy, and S. E. Vtysberg.are
mentioned..There.are,15'figurebp 10 tables,:and 132 references: 16 Soviet.
-ASSOCIATION: Fiziko-khimicheakiy,inatitut.im. L. Ya. Karpova
oal Institute-imeni L,
_Phystoochemi Ya, Karpov)
Card 3/3

5.3300' 77537
sov/8o-33-1-46/49
AUTHORS: Gilidenbidt, 1. A., Furmanov, A. S., Zhavo;E~pnkov,,-X,?4,,-
TITM Brief Communications., The Vapor Pressure Over Crystal-
line Naphthalene
PERIODICAL: Zhurnal prikladnoy khimii, 1960, Vol 33, Nr 1, pp 246-
248 (USSR),
ABSTRACT: The dependencelof vapor pressure of naphthalene in air
on temperature from 16 to 500 was Investigated. Hot)
dry (or cooled) air was passed through naphthalene.
The pressure was determined by the loss of weight of
naphtlialene.. (Sed Table A.) There are 2 figures; I
tablej and 7 references,,l-Soviet,.l German, 3 U.S.,
2 U.K. The.Z.$. and U.K. references are: J. G. Chu,
i Kalil) W. Wetteroth, Chem. Eng. Frog., 49, 141
U953); H L. Shulman, C. F..Ullrich, A. Z, Proulx,
J. 0.. Zim~erman, A. I. Ch. E. J., 1, 2S6 (1955)j
G. W. Sears,.E. R. Horke, J. Am. Chem. Soc., 71b, 2026
Card 1/3 (1954); J. S. 0. Thomas) J. Soc. Chem. Ind., 35) 5o6

77537, SOV/80-33-1-46/49
Table A: Temperature (in 0 C); (bi airfeed rate
(in I/m: (c) vapor pressure (in mm
(a) (b) (a)
JGA
5
.0.12
0.011
51
16.15 0.24' 0.1)TI 1
111.15 O.OM
IK15 0.24 O.M35
1018 0.11 O.M90
19A 0.24 O.M92
21.1 Of2 0.0560
21.1 0.24,, OJAIS
M. 2 .0.24 0.0714
2:1.2 Of 0.0715
211.15, 0.12 00HO,
20.15 0.24 Olfj39
2M.6 .0.11 0.1228
28.6 0.24 0.1226
(a) (b) (c)
-)8.Q 0.24 0,125f

1112.5
R11 0.1776
j 0.24 0,17,W
31.5 0.24 0. 1759
37.4 (1-24 (121171
37.4 all (127H0
41).25 U12 0.3498
40.25 0.24 0.4498
42.0 OA5 OATIA
42.6 OJAI 0.4.146
42.0 OJ)9 (L4348
NO OAS 0.8459
50.3 0.10 Mot
50.3 0.10 OA393
Card 2/3

8/076/60/034/009/039/041XX
B02o/Bo56
AUTHORS Matveyevt K. I., Uvarov,,O. V., ZhavoLu*QX6.4~m-
TITLE: The Separation Factors.of Chlorine Isotopes in Equilibrium
Vaporization of Cl
2
PERIOD ICAL: Zhurnal,fizicheakoy khimiit 1960* Vol. 34, No. 9,.p. 2123
TEXT; In 1959, the authors published a paper (Ref. 1), in which the
separation:factors of chlorine in equilibrium vaporization of HCl had
been determinedi When using the same method, the temp rature dpendence
of'the separation factors of-the chlorine isotopes c135 and Cl in
equilibrium evaporation of molecular chlorine was measured. On the as-
sumption.thatthe radio of the vapor pressures of two kinds of isotopes
of chlorine molecule,s is.equal~to the separation factor a (which holds,
for,the majority of isotopic systems), the temperature dependence of
this ratio may be expressed by the following equations:
35 37
in -:a .1n( G1 /pC1 1-7736/T - 0.00723 (1)
P, 2 2
ln a =ln(pC13.5Cl37/pCl37):, 392/T 0.003896 (2)
2 2
Card 1/2

Temperati.ire.Dependence of the Partition S/0?01601134100410351036XX
Coefficient of. the,:System,,G,13o,.._. C,120 B004/BO67
PIC-4 (MS-4) mass spectrometer and on the basis of thefreezing point.
Samples,with 03 excess and normal 018 content were obtained from the CO
aa mple .s with 03 and 018~exoees, which had been prepared at the laboratory
of adsorption processes of -the authors' Associatio accordin to the
following reaction schemej~013 016+CU016 . C11+C13014113, 03o16016402
W C13H '4H 0 16 +H 2018 :C13H 'k4CuO 16 40u + 2H 0 16 4-C '130 16 13016+Zn
4 .2 ~4 2 2 2
ZnO+cl3ol.6. These samples were purified in the same way as the standards.
with natural composition,i )P~was measured in an apparatus calibrated with
a CC standard.The apparatus contained two cells filled with a standard
and C13O.-The. temperature was varied between -170 and +2050C, correoponding
to a prossure thange,from 100 mm Hg to 5 atfl, Inthe celle. A temparatura
dependenceof the partition-coefficient d was obtained from'the e uation
N (P pressure.in the 0611,1; N and N Ci content
a P/P (N1 2 1 2
in the two dells eipressed in molar parts)f,which follows the equation'.
Aexp(B/T). The'following values were found for the constants by a
graphical -representation of,the function logcx f(l/fli A - 0.9954;
B -14771. B_- (AC130 AC120)/R -.,6A/RP,where denotes the evaporation
Card.2/3

roxn=vo 1. 1. . and X I, A. M.

S/191/62/000/006/002/016
B110/B138
AUTHORS: Sevryugovaj It. N., Sokol'skiyp V. A-$ Chervyakovaj A. A. t
Zhavoronkqyj_JL._1L,
TITLE: High purification of industrial styrene
PERIODICAL:. Plas.ticheakiye ma3syj noo 69 1962; 5-7
TEYT: An attemDt,was made to reduce the impurity content of styrene to
analytical puri;Y. Rectification was performed at 50 mm 11,3 in a Pyrex
laboratory rectification column.. The,Qolumn, 1-5 mm high and 30 = in
diimeter, bias filled with 3-3 spirals of 0.2 mm stainless wire anC.'
possessed only a slighthvdraulic resistance. The surface of the condonsa-'
tion column.was calculate(i~so~that vapor completely condenued even under
maximum ~ pressure... Before'.setting the apparatus in operati~on, it was
evacuated to 1-2 mm Hg, 1 liter styrene was poured into the flask, and the
heater switched on. With astyrene/ethyl benzene mixture in a ratio~of
4 to 1Z and a distribution coefficient of 1.36, the maximum load on the
cross-section of the colu=n.~ 1100 cc/hr, equivalent to 160 cc/c62-hr.
With a minimum charge of the steady state developed after a hra.:
card 1/2-,

sligi1621000100610021016
High purification of industrial B110/B138
ks~the efficiency of the column falls only slightly with increasing charge
later experiments were conducted with maximum charge. Following 11. N.
Bushmakin (ZhPKht 33 1 no~. 1, 127 (196o)) the relation of the efficienoy of
the column.to the reflux was determined at 10-12 mm I-Ig (upper pa-t* of the
column) and 1000 ccAr. The'efficiency fell only slightly aftor an
extraction of more tha
n 15-2C~P, An attempt waa then made to produce'puro
atyrene at an efficiency of 18-20 theoretical plates, a residual preasure
of 14 mm IHg upper part of the.c Iolumn)p *and 1000 cc/hr. The steady state
was reached.after 8 hrs) and extraction proceeded at a constant rate. Lt
5010,cc of styrene, fraction 1 (50 oc) contained volatile constit-uents
(ethyl benzene and water)~ fraction II < 0.1%a by weight oil ethyl
benzene, /, 0.0002~. by weight of divinyl benzene$