Solvent extraction studies of Sm(III) from nitrate medium and separation factors of rare earth elements with mixtures of sec-octylphenoxyacetic acid and 1,10-phenthroline

	Solvent extraction studies of Sm(III) from nitrate medium and separation factors of rare earth elements with mixtures of sec-octylphenoxyacetic acid and 1,10-phenthroline
	Fan SJ ; Song NH ; Jia Q ; Liao WP
刊名	journal of chemical technology and biotechnology
	2010
卷号	85 期号:6 页码:793-797
关键词	SYNERGISTIC EXTRACTION BIS(2 1 ACETIC-ACID 4 10-PHENANTHROLINE 4-TRIMETHYLPENTYL)PHOSPHINIC ACID DI(2-ETHYLHEXYL)PHOSPHORIC ACID PHOSPHORIC-ACID CHLORIDE MEDIUM COMBINATION 1-PHENYL-3-METHYL-4-BENZOYL-PYRAZALONE-5 YTTRIUM
ISSN号	0268-2575
通讯作者	jia q
中文摘要	background: liquid-liquid extraction is widely used for the separation of rare earths, among which synergistic extraction has attracted more and more attention. numerous types of synergistic extraction systems have been applied to rare earths with high extraction efficiency and selectivities. in the present study, mixtures of sec-octylphenoxyacetic acid (ca12, h(2)a(2)) and 1,10-phenanthroline (phen, b) have been used for the extraction of rare earths from nitrate medium. the stoichiometry of samarium(iii) extraction has been studied using the methods of slope analysis and constant molar ratio. the possibility of using synergistic extraction effects to separate rare earths has also been studied. results: mixtures of ca12 and phen display synergistic effects in the extraction of rare earth elements giving maximum enhancement coefficients of 5.5 (la); 13.7 (nd); 15.9 (sm); 24.5 (tb); 45.4 (yb) and 12.3 (y). samarium(111) is extracted as smha(4)b(3) with mixtures of ca12 and phen instead of smha(4) when extracted with ca12 alone. the calculated logarithm of the equilibrium constant is 6.0 and the thermodynamic functions, delta h, delta g, and delta s, have been calculated as 4.3 kj mol(-1), 33.7 kj mol(-1) and 129.7 j mol(-1) k-1, respectively. conclusion: mixtures of ca12 and phen exhibit synergistic effects on rare earth elements. graphical and numerical methods have been successfully used to determine their stoichiometries. the different synergistic effects may provide the possibility of separating yttrium from heavy lanthanoids at an appropriate ratio of ca12 and phen. (c) 2010 society of chemical industry
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000278571900010
公开日期	2012-04-26
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/43668]
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	Fan SJ,Song NH,Jia Q,et al. Solvent extraction studies of Sm(III) from nitrate medium and separation factors of rare earth elements with mixtures of sec-octylphenoxyacetic acid and 1,10-phenthroline[J]. journal of chemical technology and biotechnology,2010,85(6):793-797.
APA	Fan SJ,Song NH,Jia Q,&Liao WP.(2010).Solvent extraction studies of Sm(III) from nitrate medium and separation factors of rare earth elements with mixtures of sec-octylphenoxyacetic acid and 1,10-phenthroline.journal of chemical technology and biotechnology,85(6),793-797.
MLA	Fan SJ,et al."Solvent extraction studies of Sm(III) from nitrate medium and separation factors of rare earth elements with mixtures of sec-octylphenoxyacetic acid and 1,10-phenthroline".journal of chemical technology and biotechnology 85.6(2010):793-797.