Ionic liquid-based synergistic extraction of rare earths nitrates without diluent: Typical ion-association mechanism

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 湿法冶金清洁生产技术国家工程实验室

	Ionic liquid-based synergistic extraction of rare earths nitrates without diluent: Typical ion-association mechanism
	Xiong, Ying 1; Kuang, Wangqiang 1,2; Zhao, Junmei 2; Liu, Huizhou 2
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2017-05-31
卷号	179 页码:349-356
关键词	Cyphos (R) IL 101 DEHEHP Synergistic extraction Rare earths Undiluted
ISSN号	1383-5866
英文摘要	The coexistence of tricaprylmethylammonium nitrate ([A336][NO3]) and Di(2-ethylhexyl) 2-ethylhexyl phosphonate (DEHEHP) has been found an obvious synergistic extraction effect for rare earths nitrates. In this work, synergistic extraction behaviors without any diluent for rare earth nitrates based on tri(hexyl)tetradecylphosphonium chloride (Cyphos (R) IL 101, [P66614][Cl]) and DEHEHP have been further investigated. Pr(III) was still used as a model RE, and the maximum synergistic extraction distribution ratio was obtained at a volume ratio of 2:3 for [P66614][Cl] and DEHEHP. The synergistic enhancement coefficients have been tested for the whole rare earths. Results show that there is an obvious synergistic enhancement effect for light REs (La-Sm) and an anti-synergistic effect for Gd-Lu including Y. The effects of acidity, anions and metal ion concentrations on the extraction have been investigated. The extraction mechanism has been confirmed to be the typical ion-association reactions. The maximum loading capacity is 0.78 mol/L Pr at 293.15 K. The extraction ability of [P66614][Cl]-DEHEHP is superior to that of reported [A336][NO3]-DEHEHP, and is also greater than that of common acidic organophosphate-kerosene extraction system. Stripping, recyclability, and selectivity between REs and non-REs, has also been investigated. (C) 2017 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	DI-(2-ETHYLHEXYL) 2-ETHYLHEXYL PHOSPHONATE ; SOLVENT-EXTRACTION ; TRANSITION-METALS ; EFFICIENT SEPARATION ; GREEN SEPARATION ; FLUORINE(I) ; CERIUM(IV) ; AMMONIUM ; STRATEGY ; ELEMENTS
收录类别	SCI
语种	英语
WOS记录号	WOS:000397688200038
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/22107]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Liaoning Univ, Coll Chem, Shenyang 110036, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Xiong, Ying,Kuang, Wangqiang,Zhao, Junmei,et al. Ionic liquid-based synergistic extraction of rare earths nitrates without diluent: Typical ion-association mechanism[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2017,179:349-356.
APA	Xiong, Ying,Kuang, Wangqiang,Zhao, Junmei,&Liu, Huizhou.(2017).Ionic liquid-based synergistic extraction of rare earths nitrates without diluent: Typical ion-association mechanism.SEPARATION AND PURIFICATION TECHNOLOGY,179,349-356.
MLA	Xiong, Ying,et al."Ionic liquid-based synergistic extraction of rare earths nitrates without diluent: Typical ion-association mechanism".SEPARATION AND PURIFICATION TECHNOLOGY 179(2017):349-356.