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

被引：3
|
作者：
Lin, Ru-Shan [1 ]
Wang, You-Qun [2 ,3 ]
Meng, Zhao-Kai [1 ]
Chen, Hui [1 ]
Jia, Yan-Hong [1 ]
He, Hui [1 ]
Ye, Guo-An [1 ]
机构：
[1] China Inst Atom Energy, Dept Radiochem, Beijing 102413, Peoples R China
[2] East China Inst Technol, Fundamental Sci Radioact Geol & Explorat Technol, Nanchang 330013, Jiangxi, Peoples R China
[3] East China Inst Technol, State Key Lab Breeding Base Nucl Resources & Envi, Nanchang 330013, Jiangxi, Peoples R China
来源：
RADIOCHIMICA ACTA | 2019年 / 107卷 / 02期
关键词：
Uranium; electrochemical; thermodynamic; LiCl-KCl; molten salt; pyroprocessing; CATHODIC BEHAVIOR; SAMARIUM III; URANIUM; ACTINIDES; IONS; PU; COEFFICIENTS; MOLYBDENUM; GADOLINIUM; CHLORIDES;
D O I：
10.1515/ract-2017-2898
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
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.
引用
收藏
页码：95 / 104
页数：10
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