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Kinetics for extraction of zirconium and hafnium in DIBK-P350 system

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Abstract

The extraction kinetics of zirconium and hafnium from the mixtures of diisobutyl ketone (DIBK) and di-(1-methyl-heptyl) methyl phosphonate (P350) were studied by using a Lewis cell. The results show that the extraction of zirconium and hafnium fit with pseudo-first order reaction, and the extraction kinetic of zirconium is governed by chemical reactions at bulk phase with activation energy (E a, Zr) of −10.412 kJ/mol, while for hafnium, it is proved to be controlled by mixed-control, whose activation energy (E a, Hf) is calculated to be −34.362 kJ/mol.

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Acknowledgments

The authors wish to thank the National Science & Technology Pillar Program in the 12th 5-year Plan of China (2012BAB10B10), National Natural Science Foundation of China (51174146 and 51374158), Program for New Century Excellent Talents in University (NCET-13-0941), Wuhan Chenguang Scheme established under Wuhan Science and Technology Bureau (2014070404010217) and the program for excellent young scientific and technological innovation team of Hubei Provincial Department of Education, China (T201506).

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Authors and Affiliations

  1. Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430073, China

    Zhi-gao Xu, Jun Zhao, Yuan-lai Xu, Ru-an Chi, Pan-hong Li & Xin Jin

  2. Division of Mineral Resources, Metallurgy and Materials, General Research Institute for Nonferrous Metals, Beijing, 100088, China

    Zhi-gao Xu & Li-jun Wang

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  1. Zhi-gao Xu
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  2. Jun Zhao
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  3. Li-jun Wang
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  4. Yuan-lai Xu
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  7. Xin Jin
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Correspondence to Zhi-gao Xu.

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Xu, Zg., Zhao, J., Wang, Lj. et al. Kinetics for extraction of zirconium and hafnium in DIBK-P350 system. J Radioanal Nucl Chem 309, 701–707 (2016). https://doi.org/10.1007/s10967-015-4640-1

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  • DOI: https://doi.org/10.1007/s10967-015-4640-1

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