锂的新萃取体系研究  

Study on New Extraction System for Lithium

作　　者：盛怀禹 李蓓莉[1] 陈耀焕 袁群[1] 许庆仁[1] 严金英[1] 姚介兴 叶伟贞[1] 龙海燕[1] 戴浦兴 

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》1995年第7期689-694,共6页Acta Chimica Sinica

摘　　要：本文报道由偶氮类螯合剂,季铵盐及邻二氯苯所组成的一类新萃取体系的萃锂性能.讨论了该体系的萃锂反应机理、萃取热力学及萃合物结构.实验结果表明,新体系具有良好的萃锂性能及很大的锂钠分离系数(β_(Li/Na)).o-Arylazo-β-arylols (HA) were first time chosen as the extractants for lithium (Li+) with the formation.of chelating anion (LiA2-) which could be extracted into inactive solvents in the presence of a quaternary ammonium base (Q+X-). The mechanism of this chelation-ion association synergic extraction was discussed in detail. The dynamics data and the thermodynamics parameters and the structure of the extractable complexes were determined. It was shown that the new system exhibits excellent properities, especially the larger separation coefficient βLi/Na than other systems hitherto issued.

关 键 词：锂 萃取 协萃体系 偶氮螯合剂 季铵盐 

分 类 号：O614.111[理学—无机化学] O658.2[理学—化学]