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, Yalan; Liu, Kui; Luo, Lixia; Yuan, Liyong; Chai, Zhifang; Shi, Weiqun |
| 刊名 | Electrochimica acta
 |
| 出版日期 | 2018-06-10 |
| 卷号 | 275页码:100-109 |
| ISSN号 | 0013-4686 |
| 关键词 | Uranium Lanthanides Separation Oxide mixtures Licl-kcl eutectic |
| DOI | 10.1016/j.electacta.2018.04.140 |
| 通讯作者 | Shi, weiqun(shiwq@ihep.ac.cn) |
| 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. |
| 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 |
| WOS类目 | Electrochemistry |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000432564500012 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177537 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Shi, Weiqun |
| 作者单位 | Chinese Acad Sci, Inst High Energy Phys, Lab Nucl Energy Chem, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yalan,Liu, Kui,Luo, Lixia,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, Yalan,Liu, Kui,Luo, Lixia,Yuan, Liyong,Chai, Zhifang,&Shi, Weiqun.(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, Yalan,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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来源：高能物理研究所
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