首页 | 本学科首页   官方微博 | 高级检索  
     检索      

N235萃取HCl体系中TBP消除第三相的作用机理
引用本文:谢琦莹,陈景,杨项军,王宇.N235萃取HCl体系中TBP消除第三相的作用机理[J].无机化学学报,2007,23(1):57-62.
作者姓名:谢琦莹  陈景  杨项军  王宇
作者单位:云南大学化学科学与工程学院,昆明 650091,云南大学化学科学与工程学院,昆明 650091,云南大学化学科学与工程学院,昆明 650091,云南大学化学科学与工程学院,昆明 650091
摘    要:通过测定萃取有机相的电导率变化研究叔胺N235(三烷基胺)萃取盐酸体系中第三相的形成及改性剂消除第三相的作用机理。实验结果表明,无改性剂时萃取体系在各种条件下均出现第三相。第三相组成为R3NH+(H2O)3·Cl-,具有导电性。加改性剂TBP(磷酸三丁酯)后,第三相消失。本文认为改性剂TBP消除第三相的作用机理是TBP能够将萃合物R3NH+(H2O)3·Cl-拆分为可溶于惰性稀释剂的R3NH+(H2O)3·O=P(OC4H9)3大阳离子,Cl-离子则以抗衡离子分散于稀释剂中。

关 键 词:溶剂萃取    叔胺    第三相    改性剂
文章编号:1001-4861(2007)01-0057-06
修稿时间:2006-07-03

Mechanism of Third-phase Elimination by TBP in N235/ HCl Solvent Extraction System
XIE Qi-Ying,CHEN Jing,YANG Xiang-Jun and WANG Yu.Mechanism of Third-phase Elimination by TBP in N235/ HCl Solvent Extraction System[J].Chinese Journal of Inorganic Chemistry,2007,23(1):57-62.
Authors:XIE Qi-Ying  CHEN Jing  YANG Xiang-Jun and WANG Yu
Institution:School of Chemical Science and Technology, Yunnan University, Kunming 650091,School of Chemical Science and Technology, Yunnan University, Kunming 650091,School of Chemical Science and Technology, Yunnan University, Kunming 650091 and School of Chemical Science and Technology, Yunnan University, Kunming 650091
Abstract:The mechanism of the third-phase elimination by modifier TBP in the N235/HCl solvent extraction system were investigated by means of the conductivity changes of extraction organic phase. The results show that the third-phase is formed in the N235 extraction system in all cases without the modifier TBP in organic phase, and the structure of the third phase is R3NH+(H2O)3·Cl-, which makes organic phase conductive. With the addition of the modifier TBP in the organic phase, the third-phase disappeared. The reason of the third-phase elimination by the modifier TBP is that R3NH+(H2O)3·Cl- could be split by TBP and form a huge cation R3NH+(H2O)3·O=P(OC4H9)3 that could be dissolved in inert diluent, and simultaneously Cl- would be dispersed in diluent as an equilibrium ion.
Keywords:solvent extraction  tertiary amine (N235)  third-phase  modifier
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《无机化学学报》浏览原始摘要信息
点击此处可从《无机化学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号