Abstract

The extraction of lanthanide chlorides from 0.5 M NaCl solutions in three-component water-organic systems of 1 : 1 : 1 composition is studied using mixtures of trioctylamine and dicyclohexylamine salts with di-(2-ethylhexyl)phosphoric and caprylic acids and mixed dicyclohexylammonium salts as extractants. It is shown that the extractability of lanthanides in systems with various mixtures of binary extractants mainly increases with the increasing atomic number of the metal. The extraction selectivity when using mixtures of binary extractants is observed mainly in the extraction of heavy lanthanides, which can be used to separate heavy lanthanides from the light.

中文翻译：

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叔胺和仲胺盐在水-有机两相系统中萃取氯化镧

摘要

使用三辛胺和二环己胺盐与二（2-乙基己基）磷酸和辛酸的混合物以及二环己基混合铵盐，研究了在比例为1：1的三组分水-有机体系中从0.5 M NaCl溶液中提取镧系元素氯化物的方法。作为萃取剂。结果表明，在具有多种二元萃取剂混合物的系统中，镧系元素的萃取能力主要随金属原子序数的增加而增加。使用二元萃取剂混合物时的萃取选择性主要在重镧系元素的萃取中观察到，可将重镧系元素与轻质分离。