SCIENTIFIC ABSTRACT KRISHTALIK, L.I. - KRISS, A.E.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000826510017-1
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Sequence Number: 17
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

KRISIITALIK~ L.I. -
Electrolyals of brine in bathe with an unfilled cathode
space. Zhur. prikl. khim. 36 no.9:1958-1965 D 163.
(MIRA 17:1)

KRISHTALIK, L.I.
vith a filled cathode chamber.
glectrolysis in brine baths -2192 0 163.
Zhur. prikl. khim. 36 no.10:2184 (MIRA 17:1)

KRI,,-)I-'TALIK, L.I.; ROTE'NIrFROS Z.A.
Overvoltage of' the anodic e-!ilution of chlorine on graphilla.
Part 1. i2mr. fiz. khim. Y no.2028-334 F 165. (r"RA 18s4)
1. Gosudarstvonnyy komitet khtmicheskoy i neftanoy promyshiennesti,
Moskva.

XPISITTALIK, L. 1'. (Heakva)
Hydrogen overvoltap on mercury at lcw current densities. Mur. fix.
khIm. 39 no.3442-648 Mr 165. (WRA 180)

Hydrowen overvoltage on morcury at low current dennities,
Part 2% Concentrated 9olutions of HC1. Zhur. f!z. Ulm.
39 no.5ilO87-1093 Ibr 165. (M',P-k 1818)

KRISTITALIKs L.I., .,
Barrier-free electrode processes. Usp.khim. 34 no.10:1831-
1845 0 1659 (MIRA 18:11)
1. Institut elektrokbimii All SSSR.

KRISHTALIK, L.I.
Stoichiometric n=ber in electrode reactions. Elektrokhiniia
1 no.3046-349 Mr 165. (MRA 18:12)
1. Institut elektrokhimii A;,' SSSR.

KRIS)ITALIKI L.J .;-ROTENILERG, d"I.A.
Overvoltage of anodic separation of chlorine on graphite.
Part 2. Zhur. fiz - Idiim. 39 no.4:9T -912 Ap 165.
(14DA 19: 1)
1. Submitted Nov. 19, 1963.

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ACC NR, AP6_6f9_240 (A) SOURCE CODE: UR/0364/66/002/003/0351/0353
AUTHOR: Krishtalik, L. I.; Rotenberg, Z._A
ORG.' nstitute of ElectrochemistgAcademy of SciencesjSSSR, Moscow (Institut elak-
trokhimii Akademii naa-S-Si-S-R-3
TITIX: A study of the anodic oxidation kinetics of graphite ~9
SOURCE: Elektrokbimiya, v. 2, no. 3, 1966, 351-353
TOPIC TAGS: graphite, anodic oxidation, kinetics, anode polarizaticn, electrode,
oxide formation, acid solution, electrochemical analysis, electrode potential,
.electric polarization, acid base equilibrium
ABSTRACT: Electrochemical oxidation of graphite was studied by analyzing,,polarization
curves. Electrodes, fashioned into 1.5 x 1.5 x 0.5 cm spatulas from DEZ 'graphite,
were polarized,on both sides in phosphoric acid and phosphate buffer solutions, the
latter sometimes containing 0.2 M Na2SO4. The polarization curves exhibited a semi-
logarithmic dependence (V -voltage as a function of log(i) - a/cm3) with a slope b
ranAing from 160 to 100 mv. At a potential of 1.3 v relative to a water electrode in
the same solution, the activation energy was 15 kcal. Similar values of b were ob-
tained for different PH in base electrolytic solutions of 5 and 3 M Perchlorate and
1.5 and 2 M sulfate. Composite data for the dependence of potential on pH in various
solutions (3 M P04-, 5 M C10; and 1.5 M SOJ-) were presented. In some pH regions, for

ACC NRs AP6019240
all of the solutions, the electrode potential dropped about 0.06 v per unit increase
in pH. In the sulfate and perchlorate solutions the potential was independent of pH
below pH = 1. A gas analysis showed the principal product at the electrode to be 002,
with CD and 02 contents an order lower. The polarization curves were rationalized by
assuming either slow decomposition, of surface oxides (in the region where OV/8pll=
0.06 v) or slow electrochemical desorption Of C02 upon division of water molecules
(Oip/dpH - 0). The affect of the graphite surface on absorption and the injection of
ions and molecules between graphite lattice planes were related to the polarization
curves obtained in phosphate solutions at pH = 1 and 3. Orig. art. has: 2 figuz*s.
SUB CODE: 07/ SUBM DATE: 30Jun65/ ORIG IMF: 003/ OTH IW: 001
Card

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ACC NR_,__APF6_01!92__3_8_ FV6~6 it/ 6 ~'/662TO:~/o S~476ii�
le7j_-,
AUTHOR: Bardina, N. G. Krishtalik, L. 1.
ORG: Institute of Electrochemistryj AcadeTy_of_Sciences SSSR, Moscow (Institut elek-
trokhimii Akademil nauk SSSR)
TIT~E: Kinetics of the anodic generation of oxygen on graphite. II
SOURCE: Elektrok1jimiya, v. 2, no. 3, 1966, 334-339
TOPIC TAGS: -p~a' graphite, anodic oxidation, anode polarization, oxide forma-
tion, electric capacitance, electrochemical analysis , electric polarization, acid
base equilibrium, electrode
ABST.RACT: A study was made of the anodic generation of oxygen on pyrolytic graphite
in the potential range described by the Tafel equation. Anodic polarization curves in
phosphate buffer and perchlorate solutions were given for p1l ranging from 1 to 9.7 and
voltage from 1 to 1.8 (saturated calumel electrode). The drop in electrode potential
with pH is shown for a constant polarization current of 7.14 x 10-5 a/cm2. In phos-
phate and in some concentrated perchlorate solutiOnSs the potential dropped about 1.0
mv after increasing the pil to unity; at low r pH. the potential in perchlorate solu-
tions was independent of pH. The electrode capacitance for drop in potential under
steady state conditions is given in the equation
Card 1 /2 __UDC: 541.13

ACC NR, AP6019238 !~7/
where i0 = current density of polarization, to interruption and C (capacitance)
4T/AT. For much longer times vo + b In C-b -1 b In T.
io
Values for the capacitance of the graphite electrodes in 1H of phosphate bufferi cal-
culated from, the above equations, ranged from 41 to 103 mkf/cm2. Explanations for the
phenomena were based on analyzing the constant b. The cause Of C02 formation was two-
fold: (1) the decomposition of surface oxides and (2) the electrochemical desorption
of C02 per division of a water molecule. The first scheme
\G0 + 2011- - \,1C0 10) + HoO + 2e-.
COS
gave 8(p / 0 pH =; -59 mv, close to the experimental values, but did not fit the depend-
ence of C on qi and pH. Orig. art. has: 4 figures, 3 tables.
SUB CODE: 07/ SUBM DATE: l8May65/ ORIG IMF: 005/ OTH PXF: 002
c.,d 212,W~-P

K=HTALISKAYA, L.R.
LESHCHUK 1.p.
phnV!,ypn Vt-Y],,, 7!,-C1 In thn or If,in of uut-gical
inf,nct."ciris. Mikrobilo2, zhur. .~7 no..I.-.'~-38 116 5,
(MIRA lEf6)
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