伯胺N1923萃取铁的囊效应  

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

作　　者：李雪梅[1] 杨永会[1] 邵华[1] 孙思修[1] 刘兆平[1] 钟红梅[1] 

机构地区：[1]山东大学化学与环境科学学院,济南250100

出　　处：《高等学校化学学报》2001年第1期59-62,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金!(批准号 :2 96 10 2 2 )资助

摘　　要：由研究伯胺 N1 92 3萃取铁 ( )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 N1 92 3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 N1 92 3萃取铁的分配比 ,呈现出“囊效应”特征 .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 IR spectra 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=K_1c(N1923)+K_2c^m(N1923)

关 键 词：囊效应 反向胶团 萃取 伯胺N1923 铁 

分 类 号：O614.811[理学—无机化学] O652.62[理学—化学]