Direct separation of uranium from lanthanides (La, Nd, Ce, Sm) in oxide mixture in LiCl-KCl eutectic melt
文献类型：期刊论文
| 作者 | Liu, K; Liu YL(刘雅兰); Liu K(刘奎); Luo LX(罗利霞); Yuan LY(袁立永) ; Chai ZF(柴之芳); Shi WQ(石伟群); Liu, YL; Luo, LX; Yuan, LY
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| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2018 |
| 卷号 | 275页码:100-109 |
| 关键词 | Uranium Lanthanides Separation Oxide mixtures LiCl-KCl eutectic |
| ISSN号 | 0013-4686 |
| DOI | 10.1016/j.electacta.2018.04.140 |
| 文献子类 | Article |
| 英文摘要 | This paper reports the direct separation of U from lanthanides (Ln) in oxide mixtures in LiCl-KCl eutectic, a method that could simplify the pyrometallurgical reprocessing of UO2-based spent fuels. In the melt, the mixture of UO2 and lanthanide oxides (Ln(2)O(3)/LnO(2)) was chloridized by AlCl3, and then U was selectively recovered by forming U-Al alloys through the redox reactions of U(IV)/U(III) and U(III)/AlxU. The results showed that U could be efficiently separated from lanthanides with high separation factors (SFU/La = 1.1 x 10(4), SFU/Ce = 1.6 x 10(5), and SFU/Sm = 2.5 x 10(4)). X-ray diffraction analysis indicated the predominant separation products to be Al3U and Al4U, whereas the real extraction rate of U was probably affected by trace amounts of O2- in the melt. For the first time, single-cell operation to separate U from Ln in mixed oxides is shown to be feasible by using AlCl3 as chlorination agent followed by electrodeposition. (c) 2018 Elsevier Ltd. All rights reserved. |
| 电子版国际标准刊号 | 1873-3859 |
| WOS关键词 | MOLTEN-SALT ; ELECTROLYTIC REDUCTION ; ELECTROCHEMICAL REDUCTION ; CHLORIDE MELTS ; RARE-EARTHS ; UO2 ; TH ; PU ; CHLORINATION ; EXTRACTION |
| WOS研究方向 | Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000432564500012 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285919]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 通讯作者 | Shi WQ(石伟群) |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu, K,Liu YL,Liu K,et al. Direct separation of uranium from lanthanides (La, Nd, Ce, Sm) in oxide mixture in LiCl-KCl eutectic melt[J]. ELECTROCHIMICA ACTA,2018,275:100-109. |
| APA | Liu, K.,刘雅兰.,刘奎.,罗利霞.,袁立永.,...&Shi, WQ.(2018).Direct separation of uranium from lanthanides (La, Nd, Ce, Sm) in oxide mixture in LiCl-KCl eutectic melt.ELECTROCHIMICA ACTA,275,100-109. |
| MLA | Liu, K,et al."Direct separation of uranium from lanthanides (La, Nd, Ce, Sm) in oxide mixture in LiCl-KCl eutectic melt".ELECTROCHIMICA ACTA 275(2018):100-109. |
入库方式： OAI收割
来源：高能物理研究所
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