Study on the Hydrolytic and Radiolytic Stabilities of N,N,N',N'-tetrabutyl-3-oxa-pentanediamide

N,N,N',N'-tetrabutyl-3-oxa-pentanediamide(TBOPDA) presents excellent extraction abilities for actinides elements. The effects of hydrolysis and radiation on extraction behavior of U(Ⅵ) with TBOPDA have been investigated. It indicates that TBOPDA has better hydrolysis stability. At 50 ℃,when the acidity is 1 mol/L HNO_3, the effects of hydrolysis on distribution ratio are unchanged, when the acidity is 5 mol/L, the changes of distribution ratio are about 37%. At the same time,it also has high radiolysis stability. When absorbed dose reached 1 MGy,D(U) declined remarkably. The addition of diluents resulted in a decline of radiolytic stability.