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Extraction of UO2 2+ with N,N-di(2-ethylhexyl)-2,2,3,3,4,4,4- heptafluorobutanamide from Nitric Acid Media

Journal article published in 2017 by Yunyi Lei, Xiaowan Li Weiya Ni Yuan Zhu Jin Han Lan Zhang and Weiguo Cao Ruifen Li
This paper was not found in any repository; the policy of its publisher is unknown or unclear.
This paper was not found in any repository; the policy of its publisher is unknown or unclear.

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Abstract

In this work, N,N-di(2-ethylhexyl)-2,2,3,3,4,4,4-heptafluorobutanamide (DEHFBA) was synthesized for the extraction of UO2 2+ from nitric acid media. IR spectroscopy, 1H-NMR and 19F-NMR were applied to characterize the synthesized DEHFBA. The effects of diluents, extractants, metal ions and nitric acid acidity on the extraction distribution ratios of uranium extraction and extraction rate have been investigated. Under optimum conditions, compared with N,N-di(2-ethylhexyl)butanamide (DEHBA) and tributyl phosphate (TBP), DEHFBA shows much better irradiation stability and extraction performance for UO2 2+ from nitric acid media at low acidity.