A particularly simple NH4Cl-based method for the dissolution of UO2 and rare earth oxides in LiCl-KCl melt under air atmosphere
文献类型：期刊论文
| 作者 | Shi, WQ ; Chai, ZF; Yuan, LY; Liu, K; Yao, BL; Liu, N; Luo, LX; Liu, YL; Shi WQ(石伟群); Chai ZF(柴之芳)
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| 刊名 | JOURNAL OF NUCLEAR MATERIALS
 |
| 出版日期 | 2018 |
| 卷号 | 508页码:63-73 |
| 关键词 | UO2 Rare-earth oxides NH4Cl Dissolution Molten salt |
| ISSN号 | 0022-3115 |
| DOI | 10.1016/j.jnucmat.2018.05.034 |
| 文献子类 | Article |
| 英文摘要 | Traditionally, the dissolution of UO2-based spent fuels in molten chlorides is difficult and usually conducted under strict controlling environment. Here, we report a particularly simple method utilizing NH4Cl for the dissolution of UO2 and rare earth oxides (RExOy), which is of potential interest for the pyrochemical reprocessing of UO2-based spent fuels. In this work, NH4Cl is conveniently introduced on the surface of LiCl-KCl melt. The results show that both the UO2 and RExOy can be successfully dissolved into the LiCl-KCl melt in air atmosphere with the assistance of NH4Cl. In addition, the dissolution process and mechanisms are studied in detail by electrochemical and spectroscopic methods. For the dissolution of UO2, UO2Cl2 is finally formed with the intermediates of U3O8 and UO3, and the obtained concentration of UO22+ is about 0.64% in the melt. In contrast, for the dissolution of RExOy, RECl3 is ultimately produced with the main intermediate of RECl(3)zxNH(4)Cl. (C) 2018 Elsevier B.V. All rights reserved. |
| 电子版国际标准刊号 | 1873-4820 |
| WOS关键词 | WATER REACTOR-FUEL ; ELECTROLYTIC REDUCTION ; ELECTROCHEMICAL-BEHAVIOR ; IONIC LIQUID ; MOLTEN-SALT ; 1-BUTYL-3-METHYLIMIDAZOLIUM CHLORIDE ; URANIUM-OXIDES ; EUTECTIC MELT ; CHLORINATION ; SEPARATION |
| WOS研究方向 | Materials Science ; Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000439134500008 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286135]  |
| 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 | Shi, WQ,Chai, ZF,Yuan, LY,et al. A particularly simple NH4Cl-based method for the dissolution of UO2 and rare earth oxides in LiCl-KCl melt under air atmosphere[J]. JOURNAL OF NUCLEAR MATERIALS,2018,508:63-73. |
| APA | Shi, WQ.,Chai, ZF.,Yuan, LY.,Liu, K.,Yao, BL.,...&罗利霞.(2018).A particularly simple NH4Cl-based method for the dissolution of UO2 and rare earth oxides in LiCl-KCl melt under air atmosphere.JOURNAL OF NUCLEAR MATERIALS,508,63-73. |
| MLA | Shi, WQ,et al."A particularly simple NH4Cl-based method for the dissolution of UO2 and rare earth oxides in LiCl-KCl melt under air atmosphere".JOURNAL OF NUCLEAR MATERIALS 508(2018):63-73. |
入库方式： OAI收割
来源：高能物理研究所
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