U(VI) Extraction by 8-hydroxyquinoline: a comparison study in ionic liquid and in dichloromethane
文献类型：期刊论文
| 作者 | Liu, ZR; Chai, ZF ; Shi, WQ; Liao, XH; Yuan, LY; Shi WQ(石伟群); Chai ZF(柴之芳); Liao XH(廖翔鸿); Yuan LY(袁立永)
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| 刊名 | RADIOCHIMICA ACTA
 |
| 出版日期 | 2017 |
| 卷号 | 105期号:6页码:441-448 |
| 关键词 | U(VI) 8-hydroxyquinoline ionic liquids extraction |
| ISSN号 | 0033-8230 |
| DOI | 10.1515/ract-2016-2664 |
| 文献子类 | Article |
| 英文摘要 | Room temperature ionic liquids (RTILs) represent a recent new class of solvents with potential application in liquid/liquid extraction based nuclear fuel reprocessing due to their unique physical and chemical properties. The work herein provides a comparison of U(VI) extraction by 8-hydroxyquinoline (HOX) in a commonly used RTIL, i.e. 1-butyl-3-methylimidazolium hexafluorophosphate ([C(4)mim][PF6]) and in conventional solvent, i.e. dichloromethane (CH2Cl2). The effect of HOX concentration, solution acidity and nitrate ions on the extraction were discussed in detail, and the speciation analyses of the extracted U(VI) were performed. One of the main emphasis of this work is the extraction mechanism of U(VI) extracted from aqueous phase into RTILs and conventional solvent. In CH2Cl2, the extraction occurs through a combination of ion change and neutral complexation, and the extracted complex is proposed as UO2(OX)(2)HOX. In [C(4)mim][PF6], although a cation-change mechanism as previously reported for RTILs-based system was involved, the extracted complex of UO2 (OX)(1.5)(HOX) (1.5) (PF6)(0.5) gave a clear indication that the usage of HOX as an acidic extractant markedly inhibited the solubility loss of [C(4)mim][PF6] during the extraction by leaching H+ to aqueous phase. Moreover, the extracted U(VI) in [C(4)mim][PF6] can be easily stripped by using 0.01 M nitric acid, which provides a simple way of the ionic liquid recycling. |
| WOS关键词 | NITRIC-ACID MEDIUM ; URANYL-ION ; BETAINIUM BIS(TRIFLUOROMETHYLSULFONYL)IMIDE ; SOLVENT-EXTRACTION ; URANIUM ; COORDINATION ; MALONAMIDE ; CHEMISTRY ; RECOVERY ; TOPO |
| WOS研究方向 | Chemistry ; Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000402382000002 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284969]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 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, ZR,Chai, ZF,Shi, WQ,et al. U(VI) Extraction by 8-hydroxyquinoline: a comparison study in ionic liquid and in dichloromethane[J]. RADIOCHIMICA ACTA,2017,105(6):441-448. |
| APA | Liu, ZR.,Chai, ZF.,Shi, WQ.,Liao, XH.,Yuan, LY.,...&袁立永.(2017).U(VI) Extraction by 8-hydroxyquinoline: a comparison study in ionic liquid and in dichloromethane.RADIOCHIMICA ACTA,105(6),441-448. |
| MLA | Liu, ZR,et al."U(VI) Extraction by 8-hydroxyquinoline: a comparison study in ionic liquid and in dichloromethane".RADIOCHIMICA ACTA 105.6(2017):441-448. |
入库方式： OAI收割
来源：高能物理研究所
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