| Direct separation of uranium from lanthanides (La, Nd, Ce, Sm) in oxide mixture in LiCl-KCl eutectic melt | |
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; Liu, K; Luo, LX; Yuan, LY; Chai, ZF; Shi, WQ
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| 2018 | |
| Source Publication | ELECTROCHIMICA ACTA
 |
| ISSN | 0013-4686 |
| EISSN | 1873-3859 |
| Volume | 275Pages:100-109 |
| Subtype | Article |
| Abstract | 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. |
| Keyword | Uranium Lanthanides Separation Oxide mixtures LiCl-KCl eutectic |
| DOI | 10.1016/j.electacta.2018.04.140 |
| WOS Keyword | MOLTEN-SALT ; ELECTROLYTIC REDUCTION ; ELECTROCHEMICAL REDUCTION ; CHLORIDE MELTS ; RARE-EARTHS ; UO2 ; TH ; PU ; CHLORINATION ; EXTRACTION |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS Research Area | Electrochemistry |
| WOS Subject | Electrochemistry |
| WOS ID | WOS:000432564500012 |
| EI Accession Number | 20181805125347 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihep.ac.cn/handle/311005/285919 |
| Collection | 多学科研究中心 |
| Corresponding Author | Shi WQ(石伟群) |
| Affiliation | 中国科学院高能物理研究所 |
| First Author Affilication | Institute of High Energy |
| Corresponding Author Affilication | Institute of High Energy |
| Recommended Citation GB/T 7714 | Liu YL,Liu K,Luo LX,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 | 刘雅兰.,刘奎.,罗利霞.,袁立永.,柴之芳.,...&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 | 刘雅兰,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. |
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