Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis
第25届中国过程控制会议专栏|Updated:2026-01-06
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Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis
Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis
中国化学工程学报(英文版)2016年24卷第5期 页码:671-676
Affiliations:
2 National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences,Beijing,China,100190
WeiWeng, Mingyong Wang, Xuzhong Gong, 等. Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis[J]. 中国化学工程学报(英文版), 2016,24(5):671-676. DOI: 10.1016/j.cjche.2016.01.006.
by molten salt electrolysis[J]. Chinese Journal of Chemical Engineering, 2016, 24(5): 671-676.
WeiWeng, Mingyong Wang, Xuzhong Gong, 等. Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis[J]. 中国化学工程学报(英文版), 2016,24(5):671-676. DOI: 10.1016/j.cjche.2016.01.006.DOI:
by molten salt electrolysis[J]. Chinese Journal of Chemical Engineering, 2016, 24(5): 671-676.DOI: 10.1016/j.cjche.2016.01.006.
Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO3 by molten salt electrolysis
摘要
Abstract
A novel and environmentally friendly route to directly prepare metallic vanadium from NaVO
3
by molten salt electrolysis is proposed. The feasibility about the direct electro-reduction of NaVO
3
to metallic vanadium is analyzed based on the thermodynamic calculations and experimental verifications. The theoretical decomposition voltage of NaVO
3
to metallic vanadium is only 0.47 V at 800℃ 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 V
2
O
3
V
3
O
5
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 NaVO
3
by molten salt electrolysis is feasible.
关键词
Keywords
references
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