1－苯基－3－甲基－4－酰代吡唑酮－5与TOPO对钕的协同萃取

A Study on the Synergistic Extraction of Neodymium With 1-Phenyl-3-Methyl-4-Acetyl-Pyrazolone-5 and Trioctylphosphine Oxide (TOPO)

研究了螯合－中性协同萃取体系：１－苯基－３－甲基－４（２＇－氯苯甲酰基）吡唑酮－５（ＰＭＣＢＰ）与三辛基氧腾（ＴＯＰＯ）的二甲苯溶液从盐酸介质中对钕（Ⅲ）的萃取．实验结果表明有明显的协同效应．采用斜率法测定了协萃配合物的组成为Ｎｄ（ＰＭＣＢ）２·Ｃｌ·ＴＯＰＯ．计算了萃取平衡常数，并且讨论了协萃机理．

A study of the synergistic extraction of neodymium(Ⅲ) from hydrochloric acidsolution with a chelating agent: 1-phenyl-3-methyl-4-(2′-chlorobenzoyl)-pyrazolone-5(PMCBP) plus the neutral extractant trioctylphosphine oxide(TOPO) in xylene hasbeen described. Some synergistic effects have been observed. The experimental results suggest that the composition of synergistic complex species is Nd(PMCBP)2· Cl. TOPO,respectively. The equiliblfium constants for these synergistic extraction have been calculated and the mechanism of the synergistic extraction is discussed as well.