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Extraction of uranyl ion into ionic liquid by N,N,N′,N′-tetrabutylsuccinamide and spectroscopic study of uranyl complex

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Abstract

Interactions of uranyl with an amide ligand N,N,N′,N′-tetrabutylsuccinamide (TBSA) in ionic liquid [Bmim][NTf2] was investigated. [UO2(TBSA)3]2+ is formed from uranyl and excess TBSA, with two TBSA ligands in bidentate mode and the third in monodentate mode. The efficiency of uranyl extraction by TBSA in [Bmim][NTf2] is dependent on the aqueous nitric acid concentrations. At low HNO3 concentration as 0.01 mol·L−1, the distribution ratio (D) is over 20 times larger than that in common organic solvents, and the extracted complex is [UO2(TBSA)3]2+. The D value decreases drastically with increase of HNO3 concentration.

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Acknowledgments

We are very grateful to the National Natural Science Foundation of China (Grant No. 91026011) for financial support.

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Authors and Affiliations

  1. Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, People’s Republic of China

    Xin Wu, Yupeng Liu, Shaowen Hu & Taiwei Chu

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  1. Xin Wu
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  2. Yupeng Liu
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  3. Shaowen Hu
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  4. Taiwei Chu
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Correspondence to Taiwei Chu.

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Wu, X., Liu, Y., Hu, S. et al. Extraction of uranyl ion into ionic liquid by N,N,N′,N′-tetrabutylsuccinamide and spectroscopic study of uranyl complex. J Radioanal Nucl Chem 307, 161–167 (2016). https://doi.org/10.1007/s10967-015-4257-4

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  • DOI: https://doi.org/10.1007/s10967-015-4257-4

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