α-乙基己酸萃取稀土的研究

Extraction Studies on Rare-earth Elements with α- ethylhexoic Acid

本文选用α-乙基己酸作为萃取剂对稀土元素进行了分离研究．当[M^+]＝～5×10-4mol／L，I＝l，[R2H2］＝0．3lmol／L时，以logD对原子序数（Z）作图呈四分组效应，配位比（n）2．5～3．0，平均分离因素（β）1．45．实验结果表明，用α一乙基己酸作萃取剂，可以分离稀土元素．

In this paper,the separation of rare-earth elements,using α- ethylhexoic acid as expectant hasbeen studied ,When [Mn+]=~5×10-4mol/L,I=1,[R2H2]=0.3mol/L,Fign.logD-Z(atomic number )hasshowed four-group effects.Coordination rate(n):2.5~3.0,the average separation factor:(β)1 .45.Theresults indicate that using α-ethylhexoic acid as extractant can separate rare-earth elements.