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

IMR OpenIR

	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
其他题名	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 Xiaowei 1; Li Jianning 2; Long Zhiqi 2; Zhang Yongqi 2; Xue Xiangxin 1; Zhu Zhaowu 2
	2008
发表期刊	JOURNAL OF RARE EARTHS
ISSN	1002-0721
卷号	26 期号:3 页码:410-413
摘要	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.
其他摘要	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.
关键词	SOLVENT-EXTRACTION SEPARATION LANTHANIDE di-(2-ethylhexyl) phosphoric acid 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester synergistic extraction mechanism, Sm3+, Nd3+ rare earths
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:3383266
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/142430
专题	中国科学院金属研究所
作者单位	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
推荐引用方式 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.