| Synergistic extraction of rare earth by mixtures of 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester and di-(2-ethylhexyl) phosphoric acid from sulfuric acid medium | |
| Alternative Title | Synergistic extraction of rare earth by mixtures of 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester and di-(2-ethylhexyl) phosphoric acid from sulfuric acid medium |
| Huang Xiaowei1; Li Jianning2; Long Zhiqi2; Zhang Yongqi2; Xue Xiangxin1; Zhu Zhaowu2 | |
| 2008 | |
| Source Publication | JOURNAL OF RARE EARTHS
 |
| ISSN | 1002-0721 |
| Volume | 26Issue:3Pages:410-413 |
| Abstract | The extraction of Nd3+ and Sm3+ including the extraction and stripping capability as well as the separation effect of Nd3+ or Sm3+, from a sulfuric acid medium, by mixtures of di-(2-ethylhexyl) phosphoric acid (HDEHP, H(2)A(2(0))) and 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester (HEH/EHP, H2L2(0)) were studied. The distribution ratios and synergistic coefficients of Nd3+ and Sm3+ in different acidities were also determined. A synergistic extractive effect was found when HDEHP and HEH/EHP were used as mixed extractants for Sm3+ or Nd3+. The chemical compositions of the extracted complex were determined as Nd center dot(HA(2))(2)center dot HL2 and Sm center dot(HA(2))(2)center dot HL2. The extraction equilibrium constants, enthalpy change, and entropy change of the extraction reaction were also determined. |
| Other Abstract | The extraction of Nd3+ and Sm3+, including the extraction and stripping capability as well as the separation effect of Nd3+ or Sm3+, from a sulfuric acid medium, by mixtures of di-(2-ethylhexyl) phosphoric acid (HDEHP, H2A2(0)) and 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester (HEH/EHP, H2L2(0)) were studied. The distribution ratios and synergistic coefficients of Nd3+ and Sm3+ in different acidities were also determined. A synergistic extractive effect was found when HDEHP and HEH/EHP were used as mixed extractants for Sm3+ or Nd3+. The chemical compositions of the extracted complex were determined as Nd·(HA2)2·HL2 and Sm·(HA2)2·HL2. The extraction equilibrium constants, enthalpy change, and entropy change of the extraction reaction were also determined. |
| Keyword | SOLVENT-EXTRACTION SEPARATION LANTHANIDE di-(2-ethylhexyl) phosphoric acid 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester synergistic extraction mechanism, Sm3+, Nd3+ rare earths |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:3383266 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/142430 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.中国科学院金属研究所 2.Gen Res Institute NonFerrous Met, Natl Engn Res Ctr Rare Earth Mat, Beijing 100088, Peoples R China 3.GRIREM Adv Materials Co Ltd, Beijing 100088, Peoples R China |
| Recommended Citation GB/T 7714 | Huang Xiaowei,Li Jianning,Long Zhiqi,et al. Synergistic extraction of rare earth by mixtures of 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester and di-(2-ethylhexyl) phosphoric acid from sulfuric acid medium[J]. JOURNAL OF RARE EARTHS,2008,26(3):410-413. |
| APA | Huang Xiaowei,Li Jianning,Long Zhiqi,Zhang Yongqi,Xue Xiangxin,&Zhu Zhaowu.(2008).Synergistic extraction of rare earth by mixtures of 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester and di-(2-ethylhexyl) phosphoric acid from sulfuric acid medium.JOURNAL OF RARE EARTHS,26(3),410-413. |
| MLA | Huang Xiaowei,et al."Synergistic extraction of rare earth by mixtures of 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester and di-(2-ethylhexyl) phosphoric acid from sulfuric acid medium".JOURNAL OF RARE EARTHS 26.3(2008):410-413. |
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