引用本文:
孙国新, 韩景田, 李玉兰, 包伯荣, 鲍猛, 姜润田, 赵淑英. N,N,N',N'-四己基丙二酰胺从硝酸介质中萃取铀(Ⅵ)[J]. 应用化学,
1998, 15(4): 29-32.
Citation: Sun Guoxin, Han Jingtian, Li Yulan, Bao Borong, Bao Meng, Jiang Runtian, Zhao Shuying. Extraction of U(Ⅵ) in Nitric Acid by N, N, N',N'-Tetrahexylmalonamide[J]. Chinese Journal of Applied Chemistry, 1998, 15(4): 29-32.
Citation: Sun Guoxin, Han Jingtian, Li Yulan, Bao Borong, Bao Meng, Jiang Runtian, Zhao Shuying. Extraction of U(Ⅵ) in Nitric Acid by N, N, N',N'-Tetrahexylmalonamide[J]. Chinese Journal of Applied Chemistry, 1998, 15(4): 29-32.
N,N,N',N'-四己基丙二酰胺从硝酸介质中萃取铀(Ⅵ)
English
Extraction of U(Ⅵ) in Nitric Acid by N, N, N',N'-Tetrahexylmalonamide
Abstract:
The extraction of nitric acid and U(Ⅵ) from nitric acid solutions with N, N, N', N'-tetrahexylmalonamide (THMA) in toluene has been carried out. The dependences of the extraction distribution ratios on the concentrations of aqueous nitric acid, extractant and sodium nitrate and the temperature have been investigated. The extraction stoichiometry has been established and the structure of the extracted complex was analyzed by IR spectrometry. The extraction constants of nitric acid and U(Ⅳ) with THMA and the reaction enthalpy were calculated. In comparison with the extractability of N, N, N', N'-tetrabutylmalonamide, it shows that increase in the alkyl chain longth lowering the formation of the third phase and decreases the extractability of the amides.
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Key words:
- tetrahexylmalonamide
- / uranium extraction
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