Reaction of Oxygen with Solutions of Neodymium Chloride in Alkali Chloride Melts: A Spectroscopy and Kinetics Study

被引：4
作者：
Volkovich, V. A. [1 ]
Ryzhov, A. A. [2 ]
Ivanov, A. B. [1 ]
Shchetinskiy, A. V. [1 ]
Maltsev, D. S. [1 ,3 ]
机构：
[1] Ural Fed Univ, Inst Phys & Technol, Dept Rare Met & Nanomat, Ekaterinburg 620002, Russia
[2] Ural Fed Univ, Inst Phys & Technol, Dept Phys & Chem Methods Anal, Ekaterinburg 620002, Russia
[3] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2021年 / 168卷 / 04期
关键词：
Neodymium; Oxygen; Precipitation; Kinetics; Absorption spectroscopy; Alkali chloride melts; Molten Salts;
D O I：
10.1149/1945-7111/abf5a5
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Reaction of oxygen with solutions of neodymium chloride in LiCl and 3LiCl-2KCl melts was studied at 450 degrees C-750 degrees C. The reaction resulted in the formation of neodymium oxychloride and the effect of temperature, amount of oxygen passed through the melt (oxygen-to-neodymium molar ratio), gas phase composition (O-2, O-2-H2O, Ar-O-2, Ar-O-2-H2O) on the course of the reaction were considered. Size of particles comprising solid precipitates formed in the melt was determined. High temperature electronic absorption spectroscopy was used to determine kinetic parameters of the reaction (reaction rates, rate constants, temperature coefficients). The activation energy of the reaction was evaluated.
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页数：8
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