Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis
Weng, Wei1; Wang, Mingyong2; Gong, Xuzhong2; Wang, Zhi2; Guo, Zhancheng1
2016-05-01
发表期刊CHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
卷号24期号:5页码:671-676
摘要A novel and environmentally friendly route to directly prepare metallic vanadium from NaVO3 by molten salt electrolysis is proposed. The feasibility about the direct electro-reduction of NaVO3 to metallic vanadium is analyzed based on the thermodynamic calculations and experimental verifications. The theoretical decomposition voltage of NaVO3 to metallic vanadium is only 0.47 V at 800 degrees C and much lower than that of the alkali and alkali earth metal chloride salts. The value is slightly higher than that of low-valence vanadium oxides such as V2O3, V3O5 and VO. However, the low-valence vanadium oxides can be further electro-reduced to metallic vanadium thermodynamically. The thermodynamic analysis is verified by the experimental results. The direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis is feasible. (C) 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.
关键词Molten Salt Electrolysis Navo3 Thermodynamic Analysis Metallic Vanadium Decomposition Voltage
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.cjche.2016.01.006
收录类别SCI
语种英语
关键词[WOS]IN-SITU ELECTROLYSIS ; HIGH-PURITY VANADIUM ; ELECTROCHEMICAL REDUCTION ; CALCIOTHERMIC REDUCTION ; SYSTEM ; CACL2 ; OXIDE ; CACL2-NACL-CAO ; EXTRACTION ; ALLOYS
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Basic Research Program of China(2013CB632606) ; National Natural Science Foundation of China(51474200) ; Youth Innovation Promotion Association, CAS(2015036)
WOS记录号WOS:000377697700016
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20962
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
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Weng, Wei,Wang, Mingyong,Gong, Xuzhong,et al. Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2016,24(5):671-676.
APA Weng, Wei,Wang, Mingyong,Gong, Xuzhong,Wang, Zhi,&Guo, Zhancheng.(2016).Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis.CHINESE JOURNAL OF CHEMICAL ENGINEERING,24(5),671-676.
MLA Weng, Wei,et al."Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis".CHINESE JOURNAL OF CHEMICAL ENGINEERING 24.5(2016):671-676.
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