Removal of aluminum to obtain high purity gadolinium with pyridinium-based ionic liquids
文献类型：期刊论文
| 作者 | Hu, Kaibo1,2; Xing, Lu1; Nie, Yi1; Li, Xuewei2; Dong, Haifeng1; Gao, Hongshuai1 |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 213页码:7 |
| 关键词 | Pyridinium-based ionic liquids Aluminum Gadolinium Liquid-liquid extraction Rare earth separation |
| ISSN号 | 0304-386X |
| DOI | 10.1016/j.hydromet.2022.105930 |
| 英文摘要 | As an associated element, aluminum (Al(III)) has a negative effect on the purity of rare earth gadolinium (Gd(III)). Three pyridinium-based ionic liquids [(CH2)(n)COOHpyr][NTf2], n = 3, 5, 7) were proposed as the solvent in liquid-liquid extraction for separation of the Al(III) impurity from Gd(III) in this study. The effect of pH value of the aqueous phase, diluent type, extraction time and temperature on the extraction separation of Al3+ from GdCl3 solution were investigated systemically. The results show that the separation factor beta of Al(III)/Gd(III) is up to 340 by adjusting the pH value of the aqueous phase which is higher than the values of other reported systems, and the removal efficiency of Al(III) could reach 97.1%, with the recovery efficiency of Gd(III) of 85.6% through one-time extraction using a mixture of ionic liquids [(CH2)(7)COOHpyr][NTf2]-[C(4)min][NTf2] as the extractant. The slope analysis and infrared spectroscopic characterization indicated that the extraction mechanism of Al(III) by the [(CH2)(7)COOHpyr][NTf2]-[C(4)mim][NTf2] system follows the cation exchange mechanism. After the extraction, 0.08 mol/L hydrochloric acid aqueous solution was used to strip Al(III) from the ionic liquid phase, and complete recovery of Al(III) could be realized. The extraction efficiency of the [(CH2)(7)COOHpyr][NTf2]-[C(4)mim][NTf2] system for separation of Al(III) is still more than 97.8% after recycling for 8 cycles. |
| WOS关键词 | RARE-EARTH ; SOLVENT-EXTRACTION ; SEPARATION ; IMPURITY ; GD |
| 资助项目 | National Natural Science Foundation of China[22078323] ; Innovation Academy for Green Manufacture[IAGM2020DB03] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000833505500011 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Innovation Academy for Green Manufacture |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/54368]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Gao, Hongshuai |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Kaibo,Xing, Lu,Nie, Yi,et al. Removal of aluminum to obtain high purity gadolinium with pyridinium-based ionic liquids[J]. HYDROMETALLURGY,2022,213:7. |
| APA | Hu, Kaibo,Xing, Lu,Nie, Yi,Li, Xuewei,Dong, Haifeng,&Gao, Hongshuai.(2022).Removal of aluminum to obtain high purity gadolinium with pyridinium-based ionic liquids.HYDROMETALLURGY,213,7. |
| MLA | Hu, Kaibo,et al."Removal of aluminum to obtain high purity gadolinium with pyridinium-based ionic liquids".HYDROMETALLURGY 213(2022):7. |
入库方式： OAI收割
来源：过程工程研究所
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