Electrochemical and thermodynamic properties of U4+ and U3+ on Mo electrode in LiCl-KCl eutectic-Reference-Cited by-同舟云学术

Electrochemical and thermodynamic properties of U4+ and U3+ on Mo electrode in LiCl-KCl eutectic

Published:2018-10-13 Issue:2 Volume:107 Page:95-104
ISSN:2193-3405
Container-title:Radiochimica Acta
language:en
Short-container-title:

Author:

Lin Ru-Shan¹,Wang You-Qun²³,Meng Zhao-Kai¹,Chen Hui¹,Jia Yan-Hong¹,He Hui¹,Ye Guo-An⁴

Affiliation:

1. Department of Radiochemistry , China Institute of Atomic Energy , Beijing 102413 , China

2. Fundamental Science on Radioactive Geology and Exploration Technology Laboratory , East China Institute of Technology , Nanchang, Jiangxi 330013 , China

3. State Key Laboratory Breeding Base of Nuclear Resources and Environment , East China Institute of Technology , Nanchang, Jiangxi 330013 , China

4. Department of Radiochemistry , China Institute of Atomic Energy , Beijing 102413 , China , Tel.: +86 10 69357877

Abstract

Abstract In this study, UCl4 was prepared by the reaction of HCl gas with UO2 in the LiCl-KCl eutectic. Then, the electrochemical behavior of U4+ and U3+ on a Mo cathode was investigated by various electrochemical techniques. The reduction process of U4+ was regarded as two steps: U4++e=U3+; U3++3e=U. Diffusion coefficients of U4+ and U3+, the apparent standard potential of U4+/U3+, U3+/U as well as U4+/U in the LiCl-KCl molten salt on the Mo electrode was determined by numerous electrochemical methods. The thermodynamic functions of formation of Gibbs free energy of UCl4 and UCl3 are calculated as well.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/ract-2017-2898/pdf

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