Extraction and separation of thorium and rare earths from nitrate medium with p-phosphorylated calixarene

	Extraction and separation of thorium and rare earths from nitrate medium with p-phosphorylated calixarene
	Lu YC ; Bi YF ; Bai Y ; Liao WP
刊名	journal of chemical technology and biotechnology
	2013
卷号	88 期号:10 页码:1836-1840
关键词	PRIMARY AMINE N1923 SOLVENT-EXTRACTION SYNERGISTIC EXTRACTION LANTHANIDES IONS ACID RIM EUROPIUM(III) ACTINIDES BEHAVIOR
ISSN号	0268-2575
通讯作者	liao wp
中文摘要	background: thorium is a natural radioactive element which is often associated in different minerals with rare earth elements (res). in order to satisfy application for nuclear fuel, thorium should be separated from res and other elements. calixarene derivatives have been proved to be excellent extractants towards thorium and res. in this study, a p-phosphorylated calixarene derivative was applied for extraction and separation of thorium and res. results: p-phosphorylated calix[4] arene, 5,11,17,23-tetra(diethoxyphosphoryl)-25,26,27,28-tetrapropyloxy-calix[4] arene (l), exhibits good selectivity towards thorium which is extracted into the organic phase as th(no3)(4)center dot 3 l. the thermodynamic functions, delta h, delta g, and delta s have been calculated as 5.55 kj mol(-1), -57.28 kj mol(-1) and 210.84 j mol(-1) k-1, respectively. the salting-out agents (nano3 and kno3) can weaken the separation of th and yb but barely affects the separation of th and la or gd. conclusion: the extraction of thorium with the calixarene derivative occurs with a neutral extraction mechanism and the extraction reaction of thorium is an endothermic process. this ligand exhibits high extraction ability towards thorium over a wide range of acidity while the extraction of res changes more with the solution acidity. added salts can affect the separation of thorium and res. this ligand may be used to separate thorium from res under appropriate conditions. (c) 2013 society of chemical industry
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000326243900005
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49564]
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	Lu YC,Bi YF,Bai Y,et al. Extraction and separation of thorium and rare earths from nitrate medium with p-phosphorylated calixarene[J]. journal of chemical technology and biotechnology,2013,88(10):1836-1840.
APA	Lu YC,Bi YF,Bai Y,&Liao WP.(2013).Extraction and separation of thorium and rare earths from nitrate medium with p-phosphorylated calixarene.journal of chemical technology and biotechnology,88(10),1836-1840.
MLA	Lu YC,et al."Extraction and separation of thorium and rare earths from nitrate medium with p-phosphorylated calixarene".journal of chemical technology and biotechnology 88.10(2013):1836-1840.