| TODGA/[C_2mim][NTf_2]萃取Th~(4+) |
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| 引用本文： | 刘超,赵龙,韦悦周,何林峰,唐方东. TODGA/[C_2mim][NTf_2]萃取Th~(4+)[J]. 无机化学学报, 2015, 31(1): 121-126 |
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| 作者姓名： | 刘超 赵龙 韦悦周 何林峰 唐方东 |
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| 作者单位： | 1. 上海交通大学核科学与工程学院,核能化工实验室,上海200240
2. 上海市计量测试技术研究院,化学与电离辐射计量技术研究所,上海201203 |
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| 基金项目： | 国家自然科学基金资助项目(11475112,91126006);上海高校特聘教授(东方学者)岗位计划资助项目. |
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| 摘 要： | 研究了N,N,N′,N′-四辛基-3-氧戊二酰胺(TODGA)溶于疏水性离子液体咪唑类离子液体1-乙基-3-甲基咪唑双三氟甲磺酰亚胺盐([C2mim][NTf2])中对硝酸水溶液体系中四价钍离子(Th4+)的萃取行为。详细考察了接触时间、酸度、Th4+浓度、TODGA浓度、温度对TODGA/[C2mim][NTf2]体系萃取性能的影响。作为对比,我们还考察了TODGA在传统有机溶剂异辛烷中对Th4+的萃取。结果表明:TODGA/[C2mim][NTf2]体系对Th4+的萃取是吸热反应,且在50℃下,能在5 min内达到平衡。萃取体系随着酸度对Th4+的萃取性能先降后增大;Th4+浓度的增大,TODGA浓度的降低,对Th4+的萃取性能下降。TODGA在离子液体萃取体系中比在有机体系中有更好的Th4+萃取效果,特别是在低酸条件下。通过萃取机理研究,推测出在低酸下萃取反应是离子交换且TODGA与Th4+配比为2∶1,在高酸下萃取是中性配位。
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| 关 键 词： | 四价钍离子 N,N,N′,N′-四辛基-3-氧戊二酰胺 离子液体 萃取 |
| 收稿时间： | 2014-08-04 |
| 修稿时间： | 2014-09-15 |
Solvent Extraction of Th4+ with TODGA in [C2mim][NTf2] |
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| LIU Chao,ZHAO Long,WEI Yue-Zhou,HE Lin-Feng and TANG Fang-Dong. Solvent Extraction of Th4+ with TODGA in [C2mim][NTf2][J]. Chinese Journal of Inorganic Chemistry, 2015, 31(1): 121-126 |
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| Authors: | LIU Chao ZHAO Long WEI Yue-Zhou HE Lin-Feng TANG Fang-Dong |
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| Affiliation: | Nuclear Chemical Engineering Laboratory, School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Nuclear Chemical Engineering Laboratory, School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Nuclear Chemical Engineering Laboratory, School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Division of Chemistry and Ionizing Radiation Measurement Technology, Shanghai Institute of Measurement and Testing Technology, Shanghai, 201203, China;Division of Chemistry and Ionizing Radiation Measurement Technology, Shanghai Institute of Measurement and Testing Technology, Shanghai, 201203, China |
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| Abstract: | |
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| Keywords: | Th4+ N,N,N',N'-tetraoctyldiglycolamide ionic liquid extraction |
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