Electroextraction of gadolinium from Gd2O3 in LiCl-KCl-AlCl3 molten salts
文献类型：期刊论文
| 作者 | Liu K(刘奎); Liu YL(刘雅兰); Yuan LY(袁立永) ; Liu, K; Liu, YL; Yuan, LY; Zhao, XL; Chai, ZF; Shi, WQ;; Chai ZF(柴之芳)
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| 刊名 | ELECTROCHIMICA ACTA
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| 出版日期 | 2013 |
| 卷号 | 109页码:732-740 |
| 关键词 | Molten chloride Gadolinium AlCl3 Intermetallic compounds Co-reduction |
| 英文摘要 | This work concerns directly the extraction of gadolinium from Gd2O3 by co-reduction with Al3+ in the LiCl-KCl-AlCl3 molten salts on the molybdenum and aluminum electrode, respectively, at temperature of 773 K. Gibbs energy calculation shows that AlCl3 can favorably chloridize Gd2O3 and release Gd3+ ions. The electrochemical behaviors of Al3+, Gd3+ and the mechanisms of alloy formation were investigated by conducting a series of electrochemical techniques. Four typical signals were observed in cyclic voltammetry, square wave voltammetry and chronopotentiometry, while five plateaus were observed in open circuit chronopotentiometry, which might correspond to different kinds of Gd-Al intermetallic compounds. Potentiostatic and galvanostatic electrolysis were conducted to extract gadolinium from the LiCl-KCl-AlCl3 melts by the co-reduction method, and it was found that if the molybdenum cathode was used, GdAl2 particles would be deposited and adhere to a large amount of salt electrolytes. In contrast, when the aluminum plate was used as the cathode, a layer formed by potentiostatic electrolysis corresponding to an intermetallic compound (GdAl3) and three layers formed by galvanostatic electrolysis corresponding to three different Gd-Al intermetallic compounds such as GdAl3, GdAl2 and GdAl could be collected and identified through scanning electron microscopy (SEM)-energy dispersive X-ray (EDX) and X-ray diffraction (XRD) analysis. Besides, electroextractions of gadolinium by co-reduction with Al3+ on the aluminum electrode have been performed with extraction efficiency of 89.7% for potentiostatic electrolysis and 96.5% for galvanostatic electrolysis, respectively. (C) 2013 Published by Elsevier Ltd. |
| 学科主题 | Electrochemistry |
| 收录类别 | SCI |
| WOS记录号 | WOS:000328006300100 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224054]  |
| 专题 | 高能物理研究所_院士 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Liu K,Liu YL,Yuan LY,et al. Electroextraction of gadolinium from Gd2O3 in LiCl-KCl-AlCl3 molten salts[J]. ELECTROCHIMICA ACTA,2013,109:732-740. |
| APA | 刘奎.,刘雅兰.,袁立永.,Liu, K.,Liu, YL.,...&石伟群.(2013).Electroextraction of gadolinium from Gd2O3 in LiCl-KCl-AlCl3 molten salts.ELECTROCHIMICA ACTA,109,732-740. |
| MLA | 刘奎,et al."Electroextraction of gadolinium from Gd2O3 in LiCl-KCl-AlCl3 molten salts".ELECTROCHIMICA ACTA 109(2013):732-740. |
入库方式： OAI收割
来源：高能物理研究所
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