The Adjustable Synergistic Effects Between Acid-Base Coupling Bifunctional Ionic Liquid Extractants for Rare Earth Separation

被引：43

作者：

Sun, Xiaoqi ^{[1
,2
]}

Waters, Kristian E. ^{[1
]}

机构：

[1] McGill Univ, Dept Min & Mat Engn, Montreal, PQ H3A 0C5, Canada

[2] Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Lab Rare Earth Separat Sci & Engn, Xiamen 361021, Peoples R China

来源：

AICHE JOURNAL | 2014年 / 60卷 / 11期

基金：

加拿大自然科学与工程研究理事会;

关键词：

ionic liquid; rare earth elements; extraction; synergistic effect; separation; SOLVENT-EXTRACTION; SELECTIVE SEPARATION; PHOSPHORIC-ACID; MIXTURES; LANTHANIDE; RECOVERY; METALS;

D O I：

10.1002/aic.14563

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Two of the most widely used industrial extractants for rare earth elements (REEs), that is, di(2-ethylhexyl)phosphoric acid (HDEHP) and 2-ethyl(hexyl)phosphonic acid mono-2-ethylhexyl ester (HEH[EHP]) were developed into [DEHP](-) type acid-base coupling bifunctionalized ionic liquids (ABC-BILs) and [EHEHP](-) type ABC-BILs, respectively. The combinations of ABC-BIL extractants revealed synergistic effects for REEs. Seven different combinations of ABC-BILs and five kinds of REEs confirmed the novel synergistic extraction. Some synergy coefficients of the combined ABC-BILs were bigger than those of mixed HDEHP and HEH[EHP] by two orders of magnitude. The first synergistic extraction produced by ionic liquid extractants in the field of solvent extraction was reported in this article. The novel synergistic extraction from combined ABC-BILs extractants revealed highly efficient and environmentally friendly potential in both of academic research and industrial application for REEs separation. (C) 2014 American Institute of Chemical Engineers

引用

页码：3859 / 3868

页数：10

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