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An experimental study on the extraction mechanisms of Ce(IV) from HNO3 solutions using C4mimNTf2 as extractant

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Abstract

A detailed extraction equilibrium study is experimentally performed to understand the extraction mechanisms of Ce(IV) by 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (C4mimNTf2) in 1,2-dichloroethane. Further, the influence of adding TBP on the distribution ratio is investigated and demonstrated. The ceric aqueous chemistry in the nitric acid solution and slope analysis are combined to reveal the extraction mechanism. The monovalent anionic complex HCe(NO3)6− is the dominant species, which extracted by C4mimNTf2. Importantly, this study demonstrates the antagonistic effect between TBP and C4mimNTf2 on the extraction process.

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Acknowledgements

The work was supported from the National Natural Science Foundation of China (U1967219).

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Authors and Affiliations

  1. College of Nuclear Science and Technology, Harbin Engineering University, Nantong Street 145th, Harbin, 150001, Heilongjiang, China

    Chunhui Li, Hui He, Mingjian He, Yang Gao, Meng Zhang & Caishan Jiao

  2. Department of Radiochemistry, China Institute of Atomic Energy, P. O. Box 275 (126), Beijing, 102413, China

    Hui He

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  1. Chunhui Li
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  2. Hui He
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Correspondence to Hui He or Caishan Jiao.

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Li, C., He, H., He, M. et al. An experimental study on the extraction mechanisms of Ce(IV) from HNO3 solutions using C4mimNTf2 as extractant. J Radioanal Nucl Chem 331, 365–373 (2022). https://doi.org/10.1007/s10967-021-08119-7

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  • DOI: https://doi.org/10.1007/s10967-021-08119-7

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