Development of Industrial Extractants into Functional Ionic Liquids for Environmentally Friendly Rare Earth Separation

被引：81

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, Xiamen 361021, Peoples R China

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2014年 / 2卷 / 07期

关键词：

Rare earth elements; Ionic liquids; Separation; Acidic extractant; Saponification; SOLVENT-EXTRACTION; RECOVERY; ELEMENTS; SYSTEM; HDEHP;

D O I：

10.1021/sc500255n

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Rare earth elements (REEs) are critical materials in many cutting-edge technology products. Di(2-ethylhexyl)phosphate (HDEHP) and 2-ethyl(hexyl) phosphonic acid mono-2-ethylhexyl ester (HEH[EHP]) are the most commonly used industrial extractants in individual REE separation However, acidic extractants, such as HDEHP and HEH[EHP], must be saponified for REEs separation, which often releases millions of tons of saponification wastewater into the environment annually. To develop effective and environmentally friendly extraction protocols for the BEE separation industry, HDEHP and HEH[EHP] were prepared as acid-base coupling bifunctional ionic liquid extractants, and their extraction behavior and stripping properties for REEs were investigated.

引用

页码：1910 / 1917

页数：8

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