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研究了N,N-二甲庚基乙酰胺(DMHAA),N,N-二丁基丁酰胺(DBBA)和N,N-二丁基己酰胺(DBHA)对硝酸、硝酸铀酰和硝酸钚的萃取。这些萃取剂对铀和钚萃取能力中等,其络合物在芳香族稀释剂中有很高的溶解度,不形成三相。在实验条件下DBHA和硝酸形成1:1络合物,和硝酸铀酰形成2:1络合物。研究表明,改变酰胺取代基链长和支链化程度有可能筛选出在中等酸度下共萃铀钚,低酸下优先反萃钚,实现铀钚分离的酰胺萃取剂。
The effects of N, N-dimethylheptaneacetamide (DMHAA), N, N-dibutylbutanamide (DBBA) and N, N- dibutylhexanamide (DBHA) on nitric acid, uranyl nitrate and plutonium nitrate Extract. These extractants have medium extraction capacity for uranium and plutonium, and their complexes have a high solubility in aromatic diluents and do not form three phases. Under the experimental conditions, DBHA forms a 1: 1 complex with nitric acid and forms a 2: 1 complex with uranyl nitrate. Studies have shown that changing the amide chain length and degree of branching makes it possible to screened amide extractants for uranium-plutonium separation at medium acidity with uranium-plutonium being preferentially stripped at lower acid concentrations for uranium-plutonium separation.