Reaction Kinetics, Mechanisms and Catalysis

, Volume 120, Issue 1, pp 31–38 | Cite as

Investigation of the course of K2SrCl4 melt deoxidization with CCl4 vapor

  • Victor L. Cherginets
  • Tatyana P. Rebrova
  • Tamara V. Ponomarenko
  • Alexander L. Rebrov
  • Oleg I. Yurchenko
  • Yury I. Dolzhenko
Article
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Accepted:

Abstract

The course of deoxidization (removal of oxide ions) of molten K2SrCl4 using tetrachloromethane vapor was investigated by a potentiometric method using Pt(O2)|YSZ oxygen electrode for the detection of current (equilibrium) oxide ion concentration. The course of the chemical stage of the ‘CCl4–O2−’ interaction in the studied melt at 923, 973 and 1023 K is characterized by pseudo-second order kinetics (with respect to O2−). The values of the rate constants determined at the said temperatures give the possibility to estimate the activation energy of the carbochlorination process as 208 kJ mol−1, which agrees with the similar parameters for other studied chloride mixtures. The final oxide ion concentration after the purification decreases from 4.90 × 10−7 mol kg−1 at 923 K to 1.23 × 10−8 mol kg−1 at 1023 K.

Keywords

Carbochlorination Potassium chloride Strontium chloride Rate constant Activation energy 
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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2016

Authors and Affiliations

  • Victor L. Cherginets
    • 1
  • Tatyana P. Rebrova
    • 1
  • Tamara V. Ponomarenko
    • 1
  • Alexander L. Rebrov
    • 1
  • Oleg I. Yurchenko
    • 2
  • Yury I. Dolzhenko
    • 3
  1. 1.Institute for Scintillation MaterialsNational Academy of Sciences of UkraineKharkivUkraine
  2. 2.V.N.Karazin Kharkiv National UniversityKharkivUkraine
  3. 3.National Technical University ‘Kharkiv Polytechnical Institute’KharkivUkraine

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