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在硝酸介质中研究了N 癸酰吗啡啉(DMPHL)与磷酸三丁酯(TBP)对U(Ⅵ)的协同萃取。通过考察萃取剂浓度、二种萃取剂的浓度比、酸度、温度、盐析剂离子强度对萃取U(Ⅵ)的影响,确定了萃取机理,求出了萃取反应平衡常数Ks,测定了萃取剂与协萃剂在不同浓度比时的协萃分配比。
Synergistic extraction of U (Ⅵ) with N decylmorpholine (DMPHL) and tributyl phosphate (TBP) was studied in nitric acid medium. The effect of extractant concentration, acidity, temperature and ionic strength of salting-out agent on the extraction of U (Ⅵ) were investigated. The extraction mechanism was determined and the equilibrium constant Ks of extraction reaction was determined. The extraction solvent With the synergistic agent at different concentrations than when the synergistic distribution ratio.