N-癸酰吗啡啉与TBP协同萃取铀(Ⅵ)的热力学研究

SYNERGISTIC EXTRACTION OF U(Ⅵ) FROM NITRIC ACI D SOLUTION WITH N-DECANOYWORPHOLINE AND TBP IN BENZENE

摘要: 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。

Abstract: The synergistic extraction properties and mechanism of uranium(Ⅵ)from nitric acid solution with N-decanoyworpholine(DMPHL) and TBP at (25±1)℃ are investigated. The influences of extractant concentration, nitric acid concentration, temperature and salting out agent on the distribution ratio are studied. The extraction equilibrium constants are calculated.