N,N′-二乙(甲)基-N,N′-二苯基脲对铀(VI)和钍(IV)萃取行为的研究  

Extraction behavior of N,N-diethyl-N,N-dibenzenyl-urea and N,N-diethyl-N,N-dibenzenyl-urea to uranium(VI)and thorium

作　　者：朱利明[1] 李宝龙[1] 曹正白[1] 徐鲁斌[1] 

机构地区：[1]苏州大学化学化工学院,江苏苏州215006

出　　处：《化学研究与应用》2004年第2期261-263,共3页Chemical Research and Application

基　　金：江苏省有机合成重点实验室开放基金资助项目 (KJS0 10 18)

摘　　要：The extraction behavior of N,N-diethyl-N,N-dibenzenyl-urea（DEDBU）and N,N-dimethyl-N,N-dibenzenyl-urea（DMDBU）to uranium（VI）and thorium（IV）from nitric acid solution was studied by using xylene or chloroform as diluent.The effect of aqueous HNO3 concentration,extractant concentration,salting-out agent concentration and aqueous UO2+2/Th4+concentration on extraction distribution ratio of U（VI）and Th（IV）was determined.The results show that the extraction behavior of the extractants DEDBU and DMDBU to U（VI）is similar to that of TBP,the solvation numbers both are two.Under the experimental condition,the extractants DEDBU and DMDBU do not show the extraction behatvior to Th（IV）.This means that the estractants may have potential application to separate U（VI）and Th（IV）.The extraction behavior of N,N-diethyl-N,N-dibenzenyl-urea(DEDBU)and N,N-dimethyl-N,N-dibenzenyl-urea(DMDBU)to uranium(VI)and thorium(IV)from nitric acid solution was studied by using xylene or chloroform as diluent.The effect of aqueous HNO_3 concentration,extractant concentration,salting-out agent concentration and aqueous UO^(2+)_2/Th^(4+)concentration on extraction distribution ratio of U(VI)and Th(IV)was determined.The results show that the extraction behavior of the extractants DEDBU and DMDBU to U(VI)is similar to that of TBP,the solvation numbers both are two.Under the experimental condition,the extractants DEDBU and DMDBU do not show the extraction behatvior to Th(IV).This means that the estractants may have potential application to separate U(VI)and Th(IV).

关 键 词：N N′-二乙基-N N′-二苯基脲 铀(VI) 钍(IV) 萃取行为 N N′-二甲基-N N′-二苯基脲 核燃料后处理 萃取剂 

分 类 号：TL24[核科学技术—核燃料循环与材料]