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题名:
Electrochemical behavior and electrowinning of uranium(IV) from FLiNaK molten salt
作者: Jiang, F; Huang, W; Zheng, HY; Zhu, TJ; She, CF; Gao, S; Long, D; Gong, Y; Li, QN
刊名: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
出版日期: 2017
卷号: 3, 页码:1897-
关键词: Uranium ; Fluoride ; Molten salt ; Electrochemical behavior ; Electrowinning
文章类型: 期刊论文
英文摘要: The electrochemical behaviors and electrowinning of uranium from LiF-NaF-KF (46.5-11.5-42.0 mol%, FLiNaK) molten salt were investigated. Cyclic voltammetric and chronopotentiometric studies revealed the presence of two steps during the electro-reduction of UF4 on W electode. U(IV) undergoes a one-electron reduction to form U(III) followed by a three-electron reduction to form U(0). The diffusion coefficient (D) of U(IV) ion was determined to be 1.33 x10(-6) cm(2) s(-1) at 550 degrees C. Based on the electrochemical behaviors of U(IV) in FLiNaK melt, pulse current electrolysis was carried out using Ni electrode. The black bulks obtained as electrolysis products were characterized to contain metallic U. Consecutive electrolysis experiments demonstrated up to 74.7% U can be separated from the fluoride melt.
收录类别: SCI
语种: 英语
ISSN号: 1588-2780
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27307
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Jiang, F,Huang, W,Zheng, HY,et al. Electrochemical behavior and electrowinning of uranium(IV) from FLiNaK molten salt[J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY,2017-01-01,3:1897-.
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文件名: Electrochemical behavior and electrowinning of uranium(IV) from FLiNaK molten salt.pdf
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