Kinetics of rare earth pre-loading with 2-ethylhexyl phosphoric acid mono 2-ethylhexyl ester [HEH(EHP)] using rare earth carbonates

被引：18
作者：
Wang, Liangshi
Huang, Xiaowei
Yu, Ying
Long, Zhiqi
机构：
[1] Gen Res Inst Nonferrous Met, Natl Engn Res Ctr Rare Earth Mat, Beijing 100088, Peoples R China
[2] Grirem Adv Mat Co Ltd, Beijing 100088, Peoples R China
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2014年 / 122卷
基金：
中国国家自然科学基金;
关键词：
Rare earth pre-loading; HEH(EHP); Rare earth carbonates; Kinetics; Pollution-free process; LIQUID-LIQUID-EXTRACTION; SOLVENT-EXTRACTION; SYNERGISTIC EXTRACTION; BIS(2,4,4-TRIMETHYLPENTYL)PHOSPHINIC ACID; MONO-2-ETHYLHEXYL ESTER; SEPARATION; RECOVERY; MIXTURES; CADMIUM(II); FLUORINE;
D O I：
10.1016/j.seppur.2013.12.007
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A new environment friendly approach for rare earth separation has been developed in this paper. The approach used rare earth carbonates to control the equilibrium acidity during the rare earth loading with HEH(EHP) in chloride system. The kinetics of rare earth pre-loading by the approach was investigated. High rare earth loading of 0.17 mol L-1 and fast kinetics with about 5 min for equilibrium were achieved, which is suitable to the application of conventional rare earth separation process. The approach is free from environmental pollution because no saponification reagent is introduced. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：490 / 494
页数：5
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