Solvent extraction of rare earth ions from nitrate media with new extractant di-（2,3-dimethylbutyl）-phosphinic acid
As a relatively new extractant, di-（2,3-dimethylbutyl）-phosphinic acid （HYY-2） is more efficient to separate heavy rare earths Tm/Yb/Lu than Cyanex 272 and P507. In this paper, HYY-2 was synthesized in our lab, and the extraction equilibrium, thermodynamics and stripping acidity for La, Gd and Y, wh...
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| Veröffentlicht in: | 中国稀土学报：英文版 2016, Vol.34 (7), p.724-730 |
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| container_title | 中国稀土学报：英文版 |
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| creator | 王俊莲 陈广 徐盛明 尹祉力 张覃 |
| description | As a relatively new extractant, di-（2,3-dimethylbutyl）-phosphinic acid （HYY-2） is more efficient to separate heavy rare earths Tm/Yb/Lu than Cyanex 272 and P507. In this paper, HYY-2 was synthesized in our lab, and the extraction equilibrium, thermodynamics and stripping acidity for La, Gd and Y, which stood for light rare earth elements （REE）, middle REE and heavy REE respectively, from nitrate media with this extractant were investigated. Meanwhile, extraction ability, capacity and stripping acidity of HYY-2 were investigated and compared with those of Cyanex 272 and P507. The separation performance for rare earth element couples Gd/Eu and Er/Y were also studied. Compared to Cyanex 272, it possessed higher extraction capacity; while compared with P507, it has lower stripping acidity. The maximum βGD/Eu 1.46 occurred at PHequilibrium=2.78 and the maximumβEr/Y was 1.47 when pHequilibrium= 2.01. |
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| ispartof | 中国稀土学报：英文版, 2016, Vol.34 (7), p.724-730 |
| issn | 1002-0721 2509-4963 |
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| source | Elsevier ScienceDirect Journals Complete - AutoHoldings; Alma/SFX Local Collection |
| subjects | Cyanex P507 溶剂萃取 硝酸介质 稀土离子 膦酸 萃取剂 轻稀土元素 |
| title | Solvent extraction of rare earth ions from nitrate media with new extractant di-（2,3-dimethylbutyl）-phosphinic acid |
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