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Competitive complexation of solid lanthanide nitrates with tri-n-butyl phosphate in n-hexane

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Abstract

Competitive complexation of solid lanthanide nitrates with tri-n-butyl phosphate (TBP) in n-hexane was studied by spectroscopic methods. For light lanthanides binary system (Nd–Pr), they complexed with TBP equally, leading to a low separation factor. However, distinct different behavior was observed for light-heavy lanthanides binary system (Nd–Ho). Heavy lanthanide Ho(NO3)3·6H2O complexed preferentially with TBP, resulting in a much higher separation factor. The separation factor was low during H2O stripping of lanthanides from their complexes in n-hexane, even thought, the tendency of stripping more light lanthanide was also observed.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (No. 21301192) and the China Scholarship Council. The authors are grateful to Dr. Lirong Zheng and Dr. Min Wu (BSRF, China) for helpful technical assistance in EXAFS experiments.

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Authors and Affiliations

  1. Department of Radiochemistry, China Institute of Atomic Energy, Beijing, 102413, People’s Republic of China

    Zhuangfei Wang, Xihong He, Liyang Zhu & Hui He

  2. College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, People’s Republic of China

    Tingting Liu

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  1. Zhuangfei Wang
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  2. Tingting Liu
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  4. Liyang Zhu
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Correspondence to Liyang Zhu.

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Wang, Z., Liu, T., He, X. et al. Competitive complexation of solid lanthanide nitrates with tri-n-butyl phosphate in n-hexane. J Radioanal Nucl Chem 311, 483–489 (2017). https://doi.org/10.1007/s10967-016-5027-7

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  • DOI: https://doi.org/10.1007/s10967-016-5027-7

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