HBTMPTP与伯胺N1923对稀土元素(Ⅲ)的协同萃取  

Studies on Synergistic Extraction of Rare Earths(Ⅲ ) with HBTMPTP and Primary Amine N1923

作　　者：孔薇[1] 王春[1] 李德谦[1] 张秀英[2] 王朝敏[2] 

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,长春130022 [2]河南师范大学化学系,新乡453002

出　　处：《高等学校化学学报》1997年第2期177-181,共5页Chemical Journal of Chinese Universities

基　　金：国家攀登计划!稀土科学基础研究

摘　　要：研究了二（2，4，4-三甲基戊基）单硫代膦酸（HBTMPTP，HL）和伯胺N1923的正己烷溶液从硫酸介质中对稀土元素（Ⅲ）的协同萃取．并以La（Ⅲ）为例，用斜率法、恒摩尔法和饱和法确定了协萃配合物的组成为（RNH3）3L2La（SO4）2，计算了协萃配合物的生成常数及热力学函数，观测了协萃配合物的IR谱．The synergistic extraction of rare earths (Ⅲ) with binary systems containing HBTMPTP and primary amine N1923 from sulfuric acid medium was observed。The synergistic extraction factor(R) decreased with increasing atomic number of lanthanides. Through the methods of slope analysis, constant mole and saturation titration, the synergistic extraction stoichiometry was obtained. The thermodynamic function was calculated. The IR spectra of the saturated synergistic extraction completely confirmed the mechanism.

关 键 词：HBTMPTP 伯胺N1923 稀土(Ⅲ) 协同萃取 

分 类 号：O614.33[理学—无机化学] O658[理学—化学]