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Extraction of trivalent americium and europium with TODGA homologs from HNO3 solution

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Abstract

Two diglycolamide homologs, N,N,N′,N′-tetraoctyl-3,6-dioxaoctane diamide (DOODA) and N,N,N′,N′-tetraoctyl-3,6,9-trioxaundecane diamide (TOUDA), were synthesized. Their extraction behaviors of Am3+ and Eu3+ were investigated and compared with those of N,N,N′,N′-tetraoctyl-3-oxapentane diamide (TODGA). The extraction ability toward Am3+ and Eu3+ decreased with increasing etheric oxygen number in the extractant structure. In contrast to TODGA, an very interesting inversion on the selectivity occurred for DOODA and TOUDA, which were more favor of extracting Am3+ than Eu3+. The maximum SF Am/Eu of 3.5 for DOODA can be achieved at 3.0 mol/L HNO3. The stoichiometries of extracted species and extraction thermodynamic parameters were also presented.

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Acknowledgements

The authors are very grateful for the financial support by the National Science Foundation of China (Nos. 11675115, 91426302 and 91126016). Analytical & Testing Center of Key Laboratory of Green Chemistry & Technology (Sichuan University) of Education Ministry of China is acknowledged for NMR, MS and ICP-AES analyses.

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Authors and Affiliations

  1. College of Chemistry, Sichuan University, Chengdu, 610064, People’s Republic of China

    Zhipeng Wang, Huang Huang, Songdong Ding, Xiaoyang Hu, Lirong Zhang, Ying Liu, Lianjun Song, Zhili Chen & Shimeng Li

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  1. Zhipeng Wang
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  2. Huang Huang
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  3. Songdong Ding
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  4. Xiaoyang Hu
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  9. Shimeng Li
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Correspondence to Songdong Ding.

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Wang, Z., Huang, H., Ding, S. et al. Extraction of trivalent americium and europium with TODGA homologs from HNO3 solution. J Radioanal Nucl Chem 313, 309–318 (2017). https://doi.org/10.1007/s10967-017-5317-8

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  • DOI: https://doi.org/10.1007/s10967-017-5317-8

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