Electrochemical extraction of Gadolinium on Sn electrode and Preparation of Sn-Gd Intermetallic Compounds in LiCl-KCl Melts
Electrochemical extraction of Gadolinium on Sn electrode and Preparation of Sn-Gd Intermetallic Compounds in LiCl-KCl Melts
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Sn电极上电化学萃取钆及LiCl-KCl熔体中Sn-Gd金属间化合物的制备
DOI：
10.1016/j.jallcom.2022.164220
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发表时间：
2022-02
影响因子：
6.2
通讯作者：
Yunhai Liu
中科院分区：
文献类型：
--
作者：
Yingcai Wang;Meiyang Quan;Shuang Zhang;Yuhui Liu;Youqun Wang;Ying Dai;Zhimin Dong;Zhongping Cheng;Zhibin Zhang;Yunhai Liu
对于核能的发展来说，消除阻碍核反应的裂变产物是很重要的。本文采用电化学法在LiCl-KCl熔盐体系中提取Gd。用一系列电化学方法测定了GdCl3和SnCl2的电化学反应。采用循环伏安等电化学方法制备了3种锡锂合金和4种锡-Gd合金。用不同的电化学测试方法计算了Gd(III)和Sn(II)离子电极过程的热力学和动力学参数。锡(II)离子的扩散系数和扩散活化能分别为2.2 3~3.78×10-5cm2 S-1和2 4.4kJmol-1。用开路计时电位法计算了不同温度下Sn3Gd金属间化合物的热力学参数(ΔHf0(Sn3Gd)=−229.225 kJmo L-1和ΔS f0(Sn3Gd)=−38.2Jmo L-1K-1)。金属Gd在熔体中的锡液电极上分别采用恒电位法和恒电流电解法提取。X-射线衍射仪、扫描电子显微镜和元素色散能谱分析表明，产物主要由金属间化合物Sn3Gd和金属锡组成。实验结果表明，在熔盐体系中电解提取裂变元素Gd的萃取率较高。
For the development of nuclear energy, it is important to remove the fission products which hinder nuclear reactions. In this paper, Gd was extracted by an electrochemical method in LiCl-KCl molten salts. The electrochemical reactions of GdCl 3 and SnCl 2 are measured by a series of electrochemical means. Three kinds of Sn-Li and four Sn-Gd alloys are obtained by cyclic voltammetry and other electrochemical means. Thermodynamic and kinetic parameters of electrode processes for Gd (III) and Sn (II) ions are calculated by different electrochemical test methods. The diffusion coefficient and diffusion activation energy of the Sn (II) ion are reactions as 2.23–3.78× 10-5 cm 2 s-1 and 24.4 kJ mol-1, respectively. Thermodynamic parameters of Sn 3 Gd intermetallic compounds were calculated based on open circuit chronopotentiometry at different temperatures (Δ H f 0 (Sn 3 G d)=− 229.225 kJ m o l-1 and Δ S f 0 (Sn 3 G d)=− 38.2 J m o l-1 K-1). Metallic Gd is extracted by potentiostatic and galvanostatic electrolysis on liquid Sn electrode in melts, respectively. According to X-ray diffraction (XRD) and scanning electron microscopy and elemental dispersive spectrometry (SEM-EDS), the products are mainly composed of the intermetallic compound Sn 3 Gd and Sn metal. The experimental results show that the fission element Gd can be extracted with high extraction rate by electrolysis in molten salt system.
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影响因子：
3.1
作者：
G. Córdoba;A. Laplace;O. Conocar;J. Lacquement
通讯作者：
G. Córdoba;A. Laplace;O. Conocar;J. Lacquement
LiCl-KCl熔体中镨(III)和铜(II)的电化学沉积以及铜电极上镨的萃取
影响因子：
2.5
作者：
Yingcai Wang;Mei Li;Milin Zhang;Wei Han;Tao Jiang;Yongde Yan
通讯作者：
Yongde Yan
影响因子：
6.6
作者：
T. Iida;T. Nohira;Y. Ito
通讯作者：
T. Iida;T. Nohira;Y. Ito
DOI：
10.1007/s11663-011-9550-1
发表时间：
2011-07
期刊：
Metallurgical and Materials Transactions B
影响因子：
--
作者：
W. Han;Fengli Wang;Yang Tian;Milin Zhang;Yongde Yan
通讯作者：
W. Han;Fengli Wang;Yang Tian;Milin Zhang;Yongde Yan
DOI：
10.1007/s12613-020-2112-2
发表时间：
2020-10
期刊：
International Journal of Minerals, Metallurgy and Materials
影响因子：
--
作者：
Tai-qi Yin;Lang Chen;Yun Xue;Yang-hai Zheng;Xuepeng Wang;Yong-De Yan;Milin Zhang;Guiling Wang
通讯作者：
Tai-qi Yin;Lang Chen;Yun Xue;Yang-hai Zheng;Xuepeng Wang;Yong-De Yan;Milin Zhang;Guiling Wang