Electrochemical separation study of LaF3 in molten FLiNaK salt

JOURNAL OF NUCLEAR MATERIALS

卷:518

Article

Wang, Yafei¹  Ge, Jianbang¹  Zhuo, Weiqian¹  Guo, Shaoqiang¹  Zhang, Jinsuo¹ 

[1] Virginia Polytech Inst & State Univ, Dept Mech Engn, Nucl Engn Program, Blacksburg, VA 24061 USA

关键词: FLiNaK;    Electrochemical behavior;    LaF3;    Electrochemical separation;   

DOI  :  10.1016/j.jnucmat.2019.03.007

来源: Elsevier

【 摘 要 】

Electrochemical studies of LaF3 in molten FLiNaK salt were performed on inert working electrodes. An additional reduction reaction prior to the decomposition of FLiNaK melt was observed when LaF3 was dissolved in and the reduction product was later recognized as lanthanum metal by SEM analysis. This phenomenon is very surprising and interesting considering the standard reduction potential of La (III) is more cathodic than that of K (I) and Na (I). The present study corrected the previous study [1] and will provide a new insight on the electrochemical and thermodynamic investigation of other lanthanides in molten FLiNaK salt. (C) 2019 Elsevier B.V. All rights reserved.

【 授权许可】

Free