具有羧酸官能团的功能性离子液体萃取分离钇的研究(英文)

被引：5
作者：
王威 [1 ,2 ]
刘郁 [1 ]
徐爱梅 [1 ]
杨华玲 [1 ,2 ]
崔红敏 [1 ,2 ]
陈继 [1 ]
机构：
[1] State Key Laboratory of Rare Earth Resources Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences
[2] Graduate School of the Chinese Academy of
来源：
ChineseJournalofChemicalEngineering | 2012年 / 20卷 / 01期
关键词：
task-special ionic liquids; extraction; yttrium; carboxylic acidic;
D O I：
暂无
中图分类号：
TQ028.32 [];
学科分类号：
摘要：
A new kind of hydrophobic ionic liquids [1-alkyl-3-(1-carboxylpropyl)im][PF6] has been synthesized,and their extraction properties for Y(III) in the nitric acid medium was also investigated.The effects of extractant concentration,equilibrium pH of aqueous phase,salt concentration,temperature etc.were discussed.The results show that this kind of Task-Specific Ionic Liquid(TSIL) needs to be saponified before being used for the Y(III) ex-traction,and the extraction is acid dependent,and the extraction efficiency increases with the aqueous phase acidity decreasing.Furthermore,the loaded organic phase is easy to be stripped;more than 95% Y(III) could be stripped from the loaded organic phase when the stripping acidity is higher than 0.07 mol?L?1.The slope analysis technique is used to investigate the extraction mechanism,and a possible cation-exchange extraction mechanism is proposed in the present extraction system.
引用
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页码：40 / 46
页数：7
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