高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (7): 1068.

• 论文 • 上一篇    下一篇

Ga3+的新萃取体系的界面特性和胶团化作用研究

於静芬, 刘涤非   

  1. 清华大学化工系, 北京, 100084
  • 收稿日期:1994-02-20 修回日期:1994-04-09 出版日期:1994-07-24 发布日期:1994-07-24
  • 通讯作者: 於静芬,女,60岁,教授.
  • 作者简介:於静芬,女,60岁,教授.
  • 基金资助:

    国家自然科学基金

Studies on Interfacial Characteristics and Micellization for A New Extraction System of Gallium

YU Jing-Fen, LIU Di-Fei   

  1. Department of Chemical Engineering, Tsinghua University, Beijing, 100084
  • Received:1994-02-20 Revised:1994-04-09 Online:1994-07-24 Published:1994-07-24

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摘要： 研究了Ga3+协萃体系(Ga3+-D2EHPA-H2MPA-正十二烷-H2SO4)的界面吸附和胶团形成热力学,发现该萃取体系中[H2MPA]影响D2EHPA和H2MPA的界面吸附性质。在中、高[H2MPA]范围内D2EHPA与H2MPA的界面吸附行为相反,D2EHPA的存在也影响H2MPA的界面吸附行为。研究了界面张力与各因素关系的数学模型,并获得某些胶团形成和界面吸附特性的物化参数。

关键词: 镓, 混合萃取体系, 界面特性, 胶团化作用

Abstract: The thermodynamics of micella formation and interfacial adsorption for a new synergistic extraction system Ga3+-D2EHPA-H2MPAwere studied, where H2MPAis a monoalkyl phosphate extractant with a long carbon chain.It was found that the concentration of HzMPAin the mixed extraction system exhibits the effect on the interfacial adsorption properties of D2EHPAand H2MPA, the interfacial adsorption behaviour of D2EHPAis opposite to that of H2MPAat the middling and high[H2MPA].At the same time D2EHPAalso exhibits the effect on the thermodynamics of interfacial adsorption and micella formation of H2MPA.Mathematical model for different factors depending on the interfacial tension was obtained.Some thermodynamic parameters of micella formation and interfacial adsorption properties were obtained.

Key words: Gallium, Mixed extraction system, Interfacial characteristics, Micellization

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