| The effect of ionic liquids as co-extractant with crown ether for the extraction of lithium in dichloromethane-water system | |
Zhu, Wenbo; Jia, Yongzhong ; Zhang, Quanyou; Sun, Jinhe; Jing, Yan; Li, Jie
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| 2019-07-01 | |
| 发表期刊 | JOURNAL OF MOLECULAR LIQUIDS
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| ISSN | 0167-7322 |
| 卷号 | 285页码:75-83 |
| 摘要 | With different anionic and cationic structures of ionic liquids influencing the efficiency of Li+ extraction, 16 different kinds of ionic liquids with the crown ether-dichloromethane system were investigated primarily. The experimental results showed that smaller relative molecular weight, hydrophobicity, uniform electron distribution on cation, and weak electron donating on anion of ionic liquids with the ligand crown ether promoted the highest extraction of lithium ions in the dichloromethane-water system. The extraction system with [BMIm][NTf2] had the largest extraction rate and distribution coefficient at 26.35% and 0.358, respectively. Cation exchange behavior between Li+ in the aqueous phase and [BMIm](+) in the organic phase was examined through fitting the line of Li+ concentration in the organic phase and [BMIm](+) concentration in the aqueous phase. The anion of (BMIm] [NTf2] coordinating with the cationic lithium-crown ether complex in the organic phase was also verified by infrared spectroscopy. For the thermodynamic studies in the system using [BMIm][NTf2] and crown ether, the extraction process of Li+ was an exothermic spontaneous reaction while lower temperature was beneficial to lithium extraction. (C) 2019 Elsevier B.V. All rights reserved. |
| DOI | 10.1016/j.molliq.2019.04.046 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.isl.ac.cn/handle/363002/34067 |
| 专题 | 盐湖资源综合利用工程技术中心 中国科学院青海盐湖研究所 |
| 推荐引用方式 GB/T 7714 | Zhu, Wenbo,Jia, Yongzhong,Zhang, Quanyou,et al. The effect of ionic liquids as co-extractant with crown ether for the extraction of lithium in dichloromethane-water system[J]. JOURNAL OF MOLECULAR LIQUIDS,2019,285:75-83. |
| APA | Zhu, Wenbo,Jia, Yongzhong,Zhang, Quanyou,Sun, Jinhe,Jing, Yan,&Li, Jie.(2019).The effect of ionic liquids as co-extractant with crown ether for the extraction of lithium in dichloromethane-water system.JOURNAL OF MOLECULAR LIQUIDS,285,75-83. |
| MLA | Zhu, Wenbo,et al."The effect of ionic liquids as co-extractant with crown ether for the extraction of lithium in dichloromethane-water system".JOURNAL OF MOLECULAR LIQUIDS 285(2019):75-83. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| The effect of ionic （5962KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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