高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (1): 59.

• 研究论文 • 上一篇    下一篇

伯胺N1923萃取铁的囊效应

李雪梅, 杨永会, 邵华, 孙思修, 刘兆平, 钟红梅   

  1. 山东大学化学与环境科学学院, 济南 250100
  • 收稿日期:1999-11-02 出版日期:2001-01-24 发布日期:2001-01-24
  • 通讯作者: 杨永会(1964年出生),男,博士,副教授,从事溶剂萃取和材料化学研究.E-mail:ssx@sdu.edu.cn E-mail:ssx@sdu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:2961022)资助

The Pocket Effect of Extraction of Iron(Ⅲ) from Sulphuric Acid Solution with Primary Amine N1923

LI Xue-Mei, YANG Yong-Hui, SHAO Hua, SUN Si-Xiu, LIU Zhao-Ping, ZHONG Hong-Mei   

  1. Department of Chemistry and Environmental Science, Shandong University, Jinan 250100, China
  • Received:1999-11-02 Online:2001-01-24 Published:2001-01-24

摘要: 由研究伯胺N1923萃取铁(Ⅲ)的平衡,提出了萃取体系中“囊效应”的概念,并用红外光谱和电镜等分析方法加以佐证.当萃取剂伯胺N1923的浓度达到一定值后,在有机相中形成了球状的胶囊(或反向胶团).其萃取过程中既有离子缔合萃取,又有胶束增溶作用,大大提高了伯胺N1923萃取铁的分配比,呈现出“囊效应”特征.

关键词: 囊效应, 反向胶团, 萃取, 伯胺N1923,

Abstract: The extraction of iron(Ⅲ) from sulfuric acid media by primary amine N1923 was investigated. The pocket effect was proposed for the first time by using IRspectra and TEM. When the concentration of extractant reached to 0.05 mol/L, primary amine N1923 formed the spherical reversed micelle, which could improve the distribution coefficient of extraction greatly, and the pocket effect emerged. The whole action of extraction contained the two kinds of mechanism, ionic complex extraction and micelle solubilization, the extraction equation can be showed as follows: D=K1c(N1923)+K2cm(N1923)

Key words: Pocket effect, Reversed micelle, Extraction, Primary amine N1923, Iron

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