| Electroextraction of neodymium from LiCl-KCl melt using binary liquid Ga-Al cathode |
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| 作者姓名： | Li Ding Xuepeng Wang Yongde Yan Valeri Smolenski Wenda Xu Alena Novoselova Yun Xue Fuqiu Ma Xingmei Zhang |
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| 作者单位： | 1. Key Laboratory of Superlight Materials and Surface Technology,Ministry of Education,College of Materials Science and Chemical Engineering,Harbin Engineering University;2. Yantai Research Institute of Harbin Engineering University;4. Department of Rare Metals and Nranomaterials,Institute of Physics and Technology,Ural Federal University;5. Yantai Standard Metrology Inspection&Test Center,National Steam Flowrate Measurement Station |
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| 基金项目： | supported by the National Natural Science Foundation of China (21976047,22176045,21790373)； |
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| 摘 要： | The electrochemical behaviour of Nd(Ⅲ) ion was investigated on inert W,active Ga and Ga-AI cathodes.It is established that the reduction of Nd(Ⅲ) ion on the inert electrode is a consecutive two-step process while that on the active electrodes is a one-step process.The apparent standard potential of the Nd(Ⅲ)/Nd redox couple at different temperatures was determined by open-circuit chronopotentiometry and semi-differential method,and the relationship between temperature and apparent standard poten...
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| 收稿时间： | 1 March 2022 |
Electroextraction of neodymium from LiCl-KCl melt using binary liquid Ga–Al cathode |
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| Li Ding,Xuepeng Wang,Yongde Yan,Valeri Smolenski,Wenda Xu,Alena Novoselova,Yun Xue,Fuqiu Ma,Xingmei Zhang.Electroextraction of neodymium from LiCl-KCl melt using binary liquid Ga-Al cathode[J].Journal of Rare Earths,2023,41(8):1250-1257. |
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| Affiliation: | 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;2. Yantai Research Institute of Harbin Engineering University, Yantai 264006, China;3. Institute of High-Temperature Electrochemistry UB RAS, Ekaterinburg 620990, Russia;4. Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, Ekaterinburg 620990, Russia;5. Yantai Standard Metrology Inspection & Test Center, National Steam Flowrate Measurement Station, Yantai 264000, China;1. Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;2. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;3. Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China;1. Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;2. Division of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China;1. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;2. Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;3. Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo 315201, China;1. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;2. State Key Laboratory of Nuclear Resources and Environment, School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang 330013, China |
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| Abstract: | The electrochemical behaviour of Nd(III) ion was investigated on inert W, active Ga and Ga–Al cathodes. It is established that the reduction of Nd(III) ion on the inert electrode is a consecutive two-step process while that on the active electrodes is a one-step process. The apparent standard potential of the Nd(III)/Nd redox couple at different temperatures was determined by open-circuit chronopotentiometry and semi-differential method, and the relationship between temperature and apparent standard potential was further discussed. The thermodynamic properties of Nd in Ga and Ga–Al electrodes such as activity coefficient and activity were evaluated via intermittent coulomb titration and temperature dependence test, and the effect of temperature on activity coefficient was verified. Finally, Nd was successfully extracted in form of alloy from molten salt by galvanostatic electrolysis, in which the current efficiency of 91.7% for the electroextraction indicates that the binary liquid Ga–Al electrode has favorable performance. |
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| Keywords: | Rare earths Electroextraction Spent nuclear fuel Pyrochemical processing Lanthanides Binary liquid cathode |
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