Ionic liquid-based synergistic extraction of rare earths nitrates without diluent: Typical ion-association mechanism
Xiong, Ying1; Kuang, Wangqiang1,2; Zhao, Junmei2; Liu, Huizhou2
2017-05-31
发表期刊SEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
卷号179页码:349-356
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.
关键词Cyphos (r) Il 101 Dehehp Synergistic Extraction Rare Earths Undiluted
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.seppur.2017.02.026
收录类别SCI
语种英语
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
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者"973" Project(2012CBA01202) ; Key Research Program of the Chinese Academy of Sciences(KGZD-EW-201-1) ; Scientific Research Found of Liaoning Provincial Education Department(L2014004) ; Program for Liaoning Excellent Talents in University(LR2015026)
WOS记录号WOS:000397688200038
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22107
专题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
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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.
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