烃基膦酸单十六烷基酯的结构与其萃取镱(Ⅲ)、镥(Ⅲ)性能的关系  

Relationships between the Structure of Monohexadecyl Hydrocarbylphosphonates and Their Behaviour in Extraction of Yb(Ⅲ) and Lu(Ⅲ)

作　　者：许庆仁[1] 叶伟贞[1] 

机构地区：[1]中国科学院上海有机化学研究所,上海200032

出　　处：《化学学报》1999年第3期312-315,共4页Acta Chimica Sinica

摘　　要：探讨了一类具有高位阻特征的烃基膦酸单十六烷基酯萃取剂R^1(R^2O)P(O)OH从氯化物介质中革取Yb(Ⅲ)和Lu(Ⅲ)的结构与性能关系.其中,R^1分别为CH_3,C_2H_5,i-C_3H_7,cyclo-C_6H_(11)和C_6H_5,R^2为C_4H_9CH(C_2H_5)C_2H_4CH(C_6H_(13))或C_6H_(13)CH(CH_3)CH_2CH(C_6H_(13)).结果表明,这类萃取剂对于Yb,Lu的萃取和分离能力随着其分子中取代基空间位阻的增大而降低.The structure-behaviour relationships of a class of highly hindered monohexadecyl hydrocarbylphosphonates,R1(R2O)P(O)OH,where R1 represents CH3, C2H5, i-C3H7,cyclo-C6H11 or C6H5, and R2 represents C4H9(C2H5) CHC2H4 (C6H13) CH or C6H13 (CH3) CHCH2 (C6H13)CH, in the extraction of Yb(Ⅲ) and Lu(Ⅲ) from chloride medium are investigated. The results show that the extraction and separation abilities for Yb and Lu decrease with increasing the steric hindrance of the substituents in extractant molecules.

关 键 词：烃基 磷酸单十六烷基 酯 萃取剂 镱 镥 

分 类 号：O614.346[理学—无机化学] O614.347[理学—化学]