Study of the carbohalogenation process in molten KCl-NaCl equimolar mixture

被引：3

作者：

Cherginets, Victor L. ^{[1
]}

Rebrova, Tatyana P. ^{[1
]}

Ponomarenko, Tamara V. ^{[1
]}

Naumenko, Vyacheslav A. ^{[1
]}

Bryleva, Ekaterina Yu. ^{[2
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Scintillat Mat, 60 Lenin Ave, UA-61001 Kharkov, Ukraine

[2] Natl Acad Sci Ukraine, State Sci Org, STC Inst Single Crystals, Lenin Ave 60, UA-61001 Kharkov, Ukraine

来源：

REACTION KINETICS MECHANISMS AND CATALYSIS | 2015年 / 116卷 / 02期

关键词：

Carbohalogenation; Sodium chloride; Potassium chloride; Rate constant; Activation energy; SCINTILLATION PROPERTIES; CARBON NANOSTRUCTURES; SINGLE-CRYSTALS;

D O I：

10.1007/s11144-015-0905-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The process of the removal of oxide ions to the gaseous phase from molten KCl-NaCl equimolar mixture using tetrachlorometane vapor was studied by a potentiometric process using Pt(O-2)vertical bar YSZ oxygen electrode for the detection of oxide ion concentration. The chemical stage of the interaction of CCl4 with oxide ions (carbohalogenation) in the molten KCl-NaCl equimolar mixture at 953, 973, 1000 and 1023 K is characterized by second order kinetics with respect to oxide ions. The temperature dependence of the rate constant is described by the equation: ln k = 43 (+/-4) - (24,800 +/- 3800) T-1, which permits the estimation of the activation energy as 206 +/- 30 kJ mol(-1). The purification limit of molten KCl-NaCl equimolar mixture from oxygen-containing admixtures in the studied temperature range decreases from 2 x 10(-9) to 3 x 10(-10) mol kg(-1) of O2- with the rise of the melt temperature from 953 to 1023 K.

引用

页码：327 / 337

页数：11

共 15 条

[1] Scintillation properties of CsSrX3:Eu2+ (CsSr1-yEuyX3, X = Cl, Br; 0 ≤ y ≤ 0.05) single crystals grown by the Bridgman method [J].

Cherginets, V. L. ;

Rebrova, N. V. ;

Grippa, A. Yu. ;

Datsko, Yu. N. ;

Ponomarenko, T. V. ;

Pedash, V. Yu. ;

Kosinov, N. N. ;

Tarasov, V. A. ;

Zelenskaya, O. V. ;

Zenya, I. M. ;

Lopin, A. V. .

MATERIALS CHEMISTRY AND PHYSICS, 2014, 143 (03) :1296-1299

[2]

Cherginets V.L., 2005, Oxoacidity: Reactions of Oxo-Compounds in Ionic Solvents

[3] Polythermal investigation of course of molten ionic bromide deoxidization by action of 'bromine plus carbon' red-ox pair [J].

Cherginets, Victor L. ;

Rebrova, Tatyana P. ;

Ponomarenko, Tamara V. ;

Naumenko, Vyacheslav A. ;

Datsko, Yuri N. .

RSC ADVANCES, 2014, 4 (95) :52915-52919

[4]

Cherginets VL, 1991, RASPLAVY MELTS, V2, P118

[5]

Kalra M, 2014, INDIAN J PURE AP PHY, V52, P597

[6] Large-scale preparation of graphene by high temperature insertion of hydrogen into graphite [J].

Kamali, Ali Reza ;

Fray, Derek J. .

NANOSCALE, 2015, 7 (26) :11310-11320

[7] Preparation of nanodiamonds from carbon nanoparticles at atmospheric pressure [J].

Kamali, Ali Reza ;

Fray, Derek J. .

CHEMICAL COMMUNICATIONS, 2015, 51 (26) :5594-5597

[8]

Knunyants L I, 1988, SOVETSKAYA ENTSYKLOP, V1

[9]

Kuznetsov AF, 1967, USSR Patent, Patent No. 201386

[10] Molten salt activation for synthesis of porous carbon nanostructures and carbon sheets [J].

Liu, Xiaofeng ;

Antonietti, Markus .

CARBON, 2014, 69 :460-466

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