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Extraction of uranium(VI) with N,N,N′,N′-tetrabutylmalonamide and N,N,N′,N′-tetrahexylmalonamide
Authors:Meng Bao  Guo-Xin Sun
Institution:(1) Department of Applied Chemistry, Institute of Shangdong Building Materials Industry, 250022 Jinan, P.R. China;(2) Shanghai Institute of Nuclear Research, The Chinese Academy of Sciences, P.O. Box 800-204, 201800 Shanghai, P.R. China
Abstract:A new diamide N,N,N′,N′-tetrahexylmalonamide (THMA) was synthesized, characterized and used in the extraction of U(VI) from nitric acid solutions. N,N,N′,N′-tetrabutylmalonamide (TBMA) was also studied to test the steric hindrance. Factors affecting this extraction system, the concentration of the extractant, aqueous nitric acid and NaNO3 and the temperature were investigated. The IR spectral study was also made of the extracted species.
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