二(2,4,4-三甲基戊基)膦酸萃取Er(Ⅲ)的动力学  

Extraction Kinetics of Er(Ⅲ) with Bis(2,4,4-trimethylpentyl) Phosphinic Acid

作　　者：陆军[1] 马根祥[1] 李德谦[1] 倪民实 

机构地区：[1]中国科学院长春应用化学研究所稀土化学与物理开放实验室

出　　处：《应用化学》1998年第3期43-46,共4页Chinese Journal of Applied Chemistry

基　　金：国家攀登计划;国家自然科学基金

摘　　要：用新型恒界面池法首次研究了二（２，４，４－三甲基戊基）膦酸在盐酸介质中萃取Ｅｒ（Ⅲ）的动力学，测定了流体线性流速、有机相浓度、水相浓度和酸度、温度及界面面积等因素对萃取速率的影响，提出其速率方程，求出萃取反应的活化能，并对萃取反应机理进行了探讨．The extraction kinetics of Er 3+ by bis(2,4,4 trimethylpentyl) phosphinic acid(HBTMPP) has been investigated using a novel constant interfacial area cell with laminar flow. The effects of concentration of Er(Ⅲ), pH, ion strength of aqueous phase and HBTMPP in organic phase on the extraction rate were studied. The influences of temperature, interfacial area on extraction kinetics were also discussed. The experimental results indicated that the extraction process might be governed by a mixed mechanism of diffusion and chemical reaction.

关 键 词：铒 萃取动力学 CYANEX272 HBTMPP 

分 类 号：O614.344[理学—无机化学]