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

页码：887 / 891

页数：5

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