Studies on extraction equilibrium of rare earths in ion liquid extraction system using 1-butyl-3-methyl-imidazolium hexafluorophosphate and 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5

被引：6
|
作者：
Pan, Zhongwei [1 ]
Lin, Jinhuo
Li, Wenjie [1 ]
Wu, Tianci
Pan, Jinding
机构：
[1] Quanzhou Normal Univ, Sch Chem & Biol Sci, Quanzhou 362000, Peoples R China
来源：
PROGRESS IN MATERIALS AND PROCESSES, PTS 1-3 | 2013年 / 602-604卷
关键词：
Ionic liquid; 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5; Rare earths; Extraction; SOLVENT-EXTRACTION; BEHAVIOR; CATION;
D O I：
10.4028/www.scientific.net/AMR.602-604.887
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The extraction equilibrium of four rare earth ions (REn+, n = 3 or 4) was investigated in ionic liquid (IL) extraction system using 1-butyl-3-methyl-imidazolium hexafluorophosphate ([Bmim]PF6) ionic liquid as extraction solvent and 1-pheny1-3-methy1-4-benzoyl-pyrazolone-5 (HPMBP, HP) as extractant. The extraction percentage could be higher than 99%. The extracted species in the REn+[Bmim]PF6-HP system was neutral REPn (n = 3 or 4) and complete recovery of REn+ extracted into [Bmim]PF6 can be achieved using diluent HCl as stripping agent. [Bmim]PF6 can be recycled in the experiment. The extraction equilibrium constants and the pH(1/2) values of four REs and their separation factors between adjacent rare earths were estimated and comparatively studied.
引用
收藏
页码：887 / 891
页数：5
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