Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《中国化学工程学报(英文版)》 2012-01
Add to Favorite Get Latest Update

Solvent Extraction of Yttrium by Task-specific Ionic Liquids Bearing Carboxylic Group

WANG Wei 1,2,LIU Yu 1,XU Aimei 1,YANG Hualing 1,2,CUI Hongmin 1,2 and CHEN Ji 1,** 1 State Key Laboratory of Rare Earth Resources Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China 2 Graduate School of the Chinese Academy of Sciences,Beijing 100039,China  
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.
【Fund】: Supported by the National Basic Research Program of China (2012CBA01202);; the National Natural Science Foundation of China (51174184)
【CateGory Index】: TQ028.32
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved