Superbase-derived protic ionic liquid extractants for metal ion separation

被引：20

作者：

Bell, Jason R. ^{[1
]}

Luo, Huimin ^{[1
]}

Dai, Sheng ^{[2
]}

机构：

[1] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2014年 / 130卷

基金：

美国能源部;

关键词：

Solvent extraction; Ionic liquids; beta-Diketone; La3+/Ba2+; SOLVENT-EXTRACTION; CROWN-ETHERS; ACTINIDES; GREENNESS; MECHANISM; SR2+; CS+;

D O I：

10.1016/j.seppur.2014.04.023

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Solvent extraction of La3+ and Ba2+ by an ionic liquid extractant in an imidazolium-based ionic liquid diluent was investigated. Seven protic ionic liquid extractants were examined and these PILs are based on five organic superbases and either 6,6,7,7,8,8,8-heptafluoro-2,2-dimethy1-3,5-octadione (Hfod) or 1,1,1,5,5,5-hexafluoroacetylacetone (Hhfac) beta-diketones as anion. For these PIL extractants, the extraction efficiencies and separation factors were found to be concentration dependent. The effects of aqueous phase acidity, extractant structure, and extractant concentration on separation properties of La3+ and Ba2+ are discussed in this paper. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：147 / 150

页数：4

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