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Extraction of uranium nitrate by novel unsymmetrical N,N’-dimethyl-N,N’-didodecyl diglycolamide

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Abstract

One novel unsymmetrical bisamide extractant, N,N’-dimethyl-N,N’-didodecyl diglycolamide (DMDDDGA), with different alkyl substituents attached to amidic N atom was synthesized and used to evaluate its extraction capability of uranium nitrate. The extraction behavior of uranium nitrate in nitric acid was studied with 0.10 mol dm−3 DMDDDGA/kerosene. DMDDDGA exhibits high extraction ability for uranium nitrate due to its methyl, the smallest alkyl, which results in lower steric hindrance in the complexation with uranium ion. The stoichiometry of DMDDDGA-U(VI) was determined by linear regression analysis of extraction data. The effect of the concentration of nitric acid and nitrate salt, and the temperature on the extraction was investigated.

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Acknowledgments

The authors are grateful for the support from the National Nature Science Foundation of China (21171069 and 21077044).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China

    Guoxin Sun, Xucan Cai, Jixun Han, Yexin Li, Yan Zhang, Tao Yang & Yu Cui

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  1. Guoxin Sun
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  2. Xucan Cai
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  3. Jixun Han
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  4. Yexin Li
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  5. Yan Zhang
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  6. Tao Yang
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  7. Yu Cui
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Correspondence to Yu Cui.

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Sun, G., Cai, X., Han, J. et al. Extraction of uranium nitrate by novel unsymmetrical N,N’-dimethyl-N,N’-didodecyl diglycolamide. J Radioanal Nucl Chem 308, 753–757 (2016). https://doi.org/10.1007/s10967-016-4702-z

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  • DOI: https://doi.org/10.1007/s10967-016-4702-z

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