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Separation of lanthanum from samarium on solid aluminum electrode in LiCl–KCl eutectic melts

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Abstract

This paper presents an electrochemical study on the separation of lanthanum from samarium on aluminum electrode at 773 K. The results from different electrochemical methods showed that Sm(III) and La(III) formed Al–Sm and Al–La intermetallic compounds on an aluminum electrode at electrode potential around −1.67 and −1.46 V, respectively. The electrochemical separation of lanthanum was carried out in LiCl–KCl–LaCl3–SmCl3 melts on solid aluminum electrodes at 773 K by potentiostatic electrolysis at −1.45 V for 40 h and the separation efficiency was 99.1 %.

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Acknowledgments

The work was financially supported by the China Scholarship Council, the National Natural Science Foundation of China (21103033, 21101040, and 91226201), the Fundamental Research Funds for the Central Universities (HEUCF201403001), the Foundation for University Key Teacher of Heilongjiang Province of China and Harbin Engineering University (1253G016 and HEUCFQ1415), and the Special Foundation of China and Heilongjiang Postdoctoral Science Foundation (2013T60344 and LBH-TZ0411). The authors gratefully acknowledge the acceptance/support by Prof. Thomas Hartmann and Prof. Yi-Tung Chen from Department of Mechanical Engineering, University of Nevada Las Vegas, USA.

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Authors and Affiliations

  1. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China

    De-Bin Ji, Yong-De Yan, Mi-Lin Zhang, Xing Li, Xiao-Yan Jing, Wei Han, Yun Xue & Zhi-Jian Zhang

  2. Key Discipline Laboratory of Nuclear Safety and Simulation Technology, Harbin Engineering University, Harbin, 150001, China

    Yong-De Yan, Yun Xue & Zhi-Jian Zhang

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  1. De-Bin Ji
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  2. Yong-De Yan
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  3. Mi-Lin Zhang
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  4. Xing Li
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  5. Xiao-Yan Jing
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  8. Zhi-Jian Zhang
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Correspondence to Yong-De Yan.

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Ji, DB., Yan, YD., Zhang, ML. et al. Separation of lanthanum from samarium on solid aluminum electrode in LiCl–KCl eutectic melts. J Radioanal Nucl Chem 304, 1123–1132 (2015). https://doi.org/10.1007/s10967-015-3978-8

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  • DOI: https://doi.org/10.1007/s10967-015-3978-8

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