Enhanced electrodeposition and separation of metallic Cr from soluble K2CrO4 on a liquid Zn cathode
文献类型：期刊论文
| 作者 | Weng, Wei1,2; Wang, Zhi3; Guo, Zhancheng2; Jiao, Shuqiang2; Wang, Mingyong2 |
| 刊名 | JOURNAL OF ENERGY CHEMISTRY
 |
| 出版日期 | 2020 |
| 卷号 | 40页码:204-211 |
| ISSN号 | 2095-4956 |
| 关键词 | Molten salt electrolysis Liquid Zn cathode Carbon contamination K2CrO4 Metallic Cr |
| DOI | 10.1016/j.jechem.2019.04.021 |
| 英文摘要 | Carbon contamination and the formation of low-valence oxides limit the preparation of refractory metals by molten salt electrolysis. In this paper, a liquid Zn cathode is adopted for the electrochemical reduction of soluble K2CrO4 to metallic Cr in CaCl2-KCl molten salt. It is found that CrO42- can be directly electrochemically reduced to Cr via a six-electron-transfer step and low-valence Cr oxides is hardly produced. The reduction rate is obviously increased from 16.7 mg(Cr) h(-1) cm(-2) on the solid Mo cathode to 58.7 mg(Cr) h(-1) cm(-2) on liquid Zn cathode. The electrodeposited Cr is distributed in liquid Zn cathode. Carbon contamination is effectively avoided due to the negligible solubility of carbon in the liquid Zn cathode. Furthermore, Cr can be effectively separated and enriched to the bottom of liquid Zn under super-gravity field, realizing the efficient acquisition of metallic Cr and recycling of liquid Zn. The method herein provides a promising route for the preparation of refractory metals with high-purity by molten salt electrolysis. (C) 2019 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved. |
| WOS关键词 | ELECTROCHEMICAL REDUCTION ; MOLTEN-SALT ; THERMODYNAMIC PROPERTIES ; EXTRACTION ; CORROSION ; GRAPHITE ; MELT ; DEOXIDATION ; NEODYMIUM ; TITANIUM |
| 资助项目 | National Natural Science Foundation of China[51804221] ; National Natural Science Foundation of China[51474200] ; National Natural Science Foundation of China[91845113] ; China Postdoctoral Science Foundation[2018M642906] ; Fundamental Research Funds for the Central Universities[FRF-TP-18-010B1] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000492696300026 |
| 资助机构 | National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/38967]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Wang, Mingyong |
| 作者单位 | 1.Wuhan Univ, Hubei Int Sci & Technol Cooperat Base Sustainable, Sch Resource & Environm Sci, Wuhan 430072, Hubei, Peoples R China 2.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Weng, Wei,Wang, Zhi,Guo, Zhancheng,et al. Enhanced electrodeposition and separation of metallic Cr from soluble K2CrO4 on a liquid Zn cathode[J]. JOURNAL OF ENERGY CHEMISTRY,2020,40:204-211. |
| APA | Weng, Wei,Wang, Zhi,Guo, Zhancheng,Jiao, Shuqiang,&Wang, Mingyong.(2020).Enhanced electrodeposition and separation of metallic Cr from soluble K2CrO4 on a liquid Zn cathode.JOURNAL OF ENERGY CHEMISTRY,40,204-211. |
| MLA | Weng, Wei,et al."Enhanced electrodeposition and separation of metallic Cr from soluble K2CrO4 on a liquid Zn cathode".JOURNAL OF ENERGY CHEMISTRY 40(2020):204-211. |
入库方式： OAI收割
来源：过程工程研究所
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