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

Journal of Residuals Science & Technology Pub Date : 2017-01-01 DOI:10.12783/issn.1544-8053/14/1/44

Y. Lei, W. Cao

引用次数: 0

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.

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N,N-二(2-乙基己基)-2,2,3,3,4,4,4-七氟丁酰胺从硝酸介质中萃取UO2 +

本文合成了N,N-二(2-乙基己基)-2,2,3,3,4,4,4-七氟丁酰胺(DEHFBA)，用于从硝酸介质中提取UO2 2+。采用红外光谱、1H-NMR和19F-NMR对合成的DEHFBA进行了表征。研究了稀释剂、萃取剂、金属离子和硝酸酸度对铀萃取物分配比和提取率的影响。在最佳条件下，与N,N-二(2-乙基己基)丁酰胺(DEHBA)和磷酸三丁酯(TBP)相比，DEHFBA在低酸性条件下具有更好的辐照稳定性和对硝酸介质中UO2 +的萃取性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Residuals Science & Technology 环境科学-工程：环境

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： The international Journal of Residuals Science & Technology (JRST) is a blind-refereed quarterly devoted to conscientious analysis and commentary regarding significant environmental sciences-oriented research and technical management of residuals in the environment. The journal provides a forum for scientific investigations addressing contamination within environmental media of air, water, soil, and biota and also offers studies exploring source, fate, transport, and ecological effects of environmental contamination.