CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Investigations on Reaction Pathway and Microstructure Transformations during Electrochemical Reduction of Cr2O3 in Molten CaCl2
Liu, Zheng-wei1,2,3; Zhang, Hong-ling1,2; Pei, Li-li1,2; Zhu, Guang-jin1,2; Xu, Hong-bin1,2; Zhang, Yi1,2
2016
Source PublicationJOURNAL OF THE ELECTROCHEMICAL SOCIETY
ISSN0013-4651
Volume163Issue:9Pages:H781-H786
Abstract

The reaction pathway and microstructure transformations in the electrochemical reduction of chromium oxide (Cr2O3) to chromium (Cr) metal in CaCl2 molten salt were investigated. Some partially electrolyzed products and Cr metal were prepared by terminating the reduction process after different time periods, which were further characterized by means of XRD and SEM et al. Calcium chromite (CaCr2O4) was chemically in-situ synthesized in CaCl2 molten salt using Cr2O3 and CaO as raw materials, and its cyclic voltammogram test and electrolysis process were examined. The reaction pathway in the electrochemical reduction of Cr2O3 was hence demonstrated to proceed through a number of well-defined reaction steps, one of which involved the chemical formation and decomposition of CaCr2O4. Meanwhile, themicrostructures changed dramatically with the process progresses. An observation-based assumption was proposed to account for the different morphologies of cubic and nodular Cr particles formed at the early and later stages, respectively. (C) 2016 The Electrochemical Society. All rights reserved.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1149/2.0621609jes
Indexed BySCI
Language英语
WOS KeywordCALCIUM-CHLORIDE ; TITANIUM-DIOXIDE ; CHROMIUM POWDER ; OXIDE ; ELECTRODEPOSITION ; SILICON ; ALLOYS ; SALTS ; TA2O5 ; MELTS
WOS Research AreaElectrochemistry ; Materials Science
WOS SubjectElectrochemistry ; Materials Science, Coatings & Films
Funding OrganizationNational Basic Research Program (973 Program) of China(2013CB632600) ; National Natural Science Foundation of China(11204304 ; Hubei Zhenhua Chemical Co., LTD. ; 21406233)
WOS IDWOS:000388988100118
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21683
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Liu, Zheng-wei,Zhang, Hong-ling,Pei, Li-li,et al. Investigations on Reaction Pathway and Microstructure Transformations during Electrochemical Reduction of Cr2O3 in Molten CaCl2[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2016,163(9):H781-H786.
APA Liu, Zheng-wei,Zhang, Hong-ling,Pei, Li-li,Zhu, Guang-jin,Xu, Hong-bin,&Zhang, Yi.(2016).Investigations on Reaction Pathway and Microstructure Transformations during Electrochemical Reduction of Cr2O3 in Molten CaCl2.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,163(9),H781-H786.
MLA Liu, Zheng-wei,et al."Investigations on Reaction Pathway and Microstructure Transformations during Electrochemical Reduction of Cr2O3 in Molten CaCl2".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 163.9(2016):H781-H786.
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