N-癸酰吗啡啉(DMPHL)与磷酸三丁酯(TBP)在不同稀释剂中协同萃取铀(VI)的研究

Influence of Diluent on Extraction Behavior of Urinium (VI) from Nitric Acid Solutions with DMPHL and TBP

研究了在不同稀释剂中N-癸酰吗啡林(DMPHL)与磷酸三丁酯(TBP)协同萃取铀( )的性能.在不同稀释剂中考察了硝酸浓度、萃取剂浓度、盐析剂效应及温度对萃取平衡的影响.此协萃体系对铀( )的萃取性能在不同稀释剂中由弱到强的顺序为:氯仿、四氯化碳、环己烷、煤油、苯,并且求出了萃取反应的各个热力学函数变化值.

Extraction of uranium(Ⅵ) from nitric acid solutions with DMPHL/TBP in a series of diluents is studied. Dependence of the extraction distribution ratios on the concentrations of aqueous nitric acid, extractant, saltingout agent and temperature is investigated. The results of the experiment show that the extracting capacity of DMPHL/TBP in different diluents in the following order:chloroform, CCl4, kerosene, hexane, and benzene. The interaction between the extractants or extracted complexes and diluents is discussed.