Synergistic extraction of rare earths(III) from chloride medium with mixtures of 1-phenyl-3-methyl-4-benzoyl-pyrazalone-5 and di-(2-ethylhexyl)-2-ethylhexylphosphonate

	Synergistic extraction of rare earths(III) from chloride medium with mixtures of 1-phenyl-3-methyl-4-benzoyl-pyrazalone-5 and di-(2-ethylhexyl)-2-ethylhexylphosphonate
	Zhao JM ; Meng SL ; Li DQ
刊名	journal of chemical technology and biotechnology
	2006
卷号	81 期号:8 页码:1384-1390
关键词	NITRIC-ACID SOLUTIONS SOLVENT-EXTRACTION LANTHANIDES SEPARATION CERIUM(IV) DEHEHP IONS
ISSN号	0268-2575
通讯作者	li dq
中文摘要	the synergistic effect of 1-phenyl-3-methyl-4-benzoyl-pyrazalone-5 (hpmbp, ha) and di-(2ethylhexyl)-2-ethylhexylphosphonate (dehehp, b) in the extraction of rare earths (re) from chloride solutions has been investigated. under the experimental conditions used, there was no detectable extraction when dehehp was used as a single extractant while the amount of re(iii) extracted by hpmbp alone was also low. but mixtures of the two extractants at a certain ratio had very high extractability for all the re (iii). for example, the synergistic enhancement coefficient was calculated to be 9.35 for y3+, and taking yb3+ and y3+ as examples, re3+ is extracted as re(oh)a(2).b. the stoichiometry, extraction constants and thermodynamic functions such as gibbs free energy change delta g (-17.06kjmol(-1)), enthalpy change delta h (-35.08kjmol(-1)) and entropy change delta s (-60.47jk(-1)mol(-1)) for y3+ at 298 k were determined. the separation factors (sf) for adjacent pairs of rare earths were calculated. studies show that the binary extraction system not only enhances the extraction efficiency of re(iii) but also improves the selectivity, especially between la(iii) and the other rare earth elements.
收录类别	SCI
语种	英语
WOS记录号	WOS:000239220100008
公开日期	2010-08-17
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/16741]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhao JM,Meng SL,Li DQ. Synergistic extraction of rare earths(III) from chloride medium with mixtures of 1-phenyl-3-methyl-4-benzoyl-pyrazalone-5 and di-(2-ethylhexyl)-2-ethylhexylphosphonate[J]. journal of chemical technology and biotechnology,2006,81(8):1384-1390.
APA	Zhao JM,Meng SL,&Li DQ.(2006).Synergistic extraction of rare earths(III) from chloride medium with mixtures of 1-phenyl-3-methyl-4-benzoyl-pyrazalone-5 and di-(2-ethylhexyl)-2-ethylhexylphosphonate.journal of chemical technology and biotechnology,81(8),1384-1390.
MLA	Zhao JM,et al."Synergistic extraction of rare earths(III) from chloride medium with mixtures of 1-phenyl-3-methyl-4-benzoyl-pyrazalone-5 and di-(2-ethylhexyl)-2-ethylhexylphosphonate".journal of chemical technology and biotechnology 81.8(2006):1384-1390.