N,N,N',N'-四异丁基-3-氧-戊二酰胺萃取铀钍的研究  

STUDY ON EXTRACTION OF URANIUM AND THORIUM WITH N, N, N', N' - TEIRAISOBUTYL-3-OXY-DIOCTLYLGLUIARAMIDE

作　　者：丁颂东[1] 夏传琴[1] 陈绍金[1] 刘忠群 陈文浚[1] 

机构地区：[1]四川大学化学学院,成都610064

出　　处：《化学研究与应用》1999年第5期561-562,共2页Chemical Research and Application

摘　　要：The extraction behavior of N, N, N’, N’-tetraisobutul-3 -oxy-dioctlylglutaramide to Uranium (VI) and Thorium (IV ) fromnitric acid solution was studied by using n-octnol and kerosene as diluent . This extractant can not only effectively extract threevalence lanthanide and actinide, but also extract four-and six-valence actinide such as Uranium(VI) and Thorium (IV). Theresults show that the distributions of U (VI) and Th (IV) increase with the concentrations of nitric acid, Th Du . Theextraction mechanism of U(VI) and TI0V)can be inferred to be the neutral compex extraction, the structural formulas of theextractives are UO2(NO3)2. L and Th(NO3)4. L, lgKexU(VI)=(VI).455±0.09, IgK’exTh(IV)=1.66±0.04 respectively. Thisextractant can be easily synthesized and is insoluble in water, stable toward radiation nontoxic. The extracted U (VI) and Th (IV)can be effectively stripped. It can be completely decomposed without any renmants. This is good for disposal of radioactivewaste.The extraction behavior of N, N, N', N'-tetraisobutul-3 -oxy-dioctlylglutaramide to Uranium (VI) and Thorium (IV ) fromnitric acid solution was studied by using n-octnol and kerosene as diluent . This extractant can not only effectively extract threevalence lanthanide and actinide, but also extract four-and six-valence actinide such as Uranium(VI) and Thorium (IV). Theresults show that the distributions of U (VI) and Th (IV) increase with the concentrations of nitric acid, Th Du . Theextraction mechanism of U(VI) and TI0V)can be inferred to be the neutral compex extraction, the structural formulas of theextractives are UO2(NO3)2. L and Th(NO3)4. L, lgKexU(VI)=(VI).455±0.09, IgK'exTh(IV)=1.66±0.04 respectively. Thisextractant can be easily synthesized and is insoluble in water, stable toward radiation nontoxic. The extracted U (VI) and Th (IV)can be effectively stripped. It can be completely decomposed without any renmants. This is good for disposal of radioactivewaste.

关 键 词：铀 钍 四异丁基 氧 戊二酰胺 萃取剂 

分 类 号：O614.62[理学—无机化学] O614.42[理学—化学]