Electrochemistry of praseodymium in LiF–CaF2

被引：0
|
作者：
M. Straka
M. Korenko
L. Szatmáry
机构：
[1] Nuclear Research Institute Řež plc,Department of Fluorine Chemistry
[2] Institute of Inorganic Chemistry,undefined
[3] Slovak Academy of Sciences,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2011年 / 289卷
关键词：
Pyrochemical separations; Praseodymium; Spent fuel reprocessing; LiF–CaF;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The electrochemical behaviour of PrF3 was studied in the LiF–CaF2 (79/21 molar ratio) at 1,213 K. Inert (W) and reactive (Ni) electrodes were used. Pr(III) ions are reduced in a single, three electron exchange. The redox potential of the Pr(III)/Pr couple at the inert electrode was observed very close to the decomposition potential of the LiF–CaF2 melt. Experiments using reactive working electrode were done. The results show the potential shift connected to the alloying reactions of Pr and Ni. Deposition of Pr–Ni layer was confirmed by SEM-EDX analysis. Conclusions for the Pr separation possibilities from spent nuclear fuel were done.
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页码：591 / 593
页数：2
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