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High-purity, low-Cl V2O5 via the gaseous hydrolysis of VOCl3 in a fluidized bed
Fan, Chuanlin1,2; Xu, Jie1,2; Yang, Haitao1,2; Zhu, Qingshan1,2
2020-04-01
Source PublicationPARTICUOLOGY
ISSN1674-2001
Volume49Pages:9-15
AbstractPresent-day all-vanadium redox flow batteries (VRFBs) generally require high purity vanadium oxide as a raw ingredient. The chlorination procedure presents distinct technical advantages with regard to preparing high purity vanadium pentoxide (V2O5) using vanadium oxytrichloride (VOCl3) as a highly pure intermediate. To efficiently prepare high purity V2O5 from VOCl3, a single-step fluidized bed chemical vapor deposition (FBCVD) method was explored in the present work. Based on thermodynamic analyses, the direct and complete conversion of VOCl3 to V2O5 is difficult, and may result in a small amount of residual Cl in the product. Consequently, the effects of temperature and the H2O/VOCl3 molar ratio on the quantity of residual Cl were assessed. The Cl concentration was found to decrease with increasing temperature or increasing H2O/VOCl3 molar ratios. Additionally, Cl was determined to be present only in the form of Cl-V bonds, while Cl-H and Cl-Cl bonds were not detected in a V2O5 product made at 200 degrees C with a H2O/VOCl3 molar ratio of 18. A Cl concentration of less than 0.05 wt% was obtained under the optimal synthesis conditions, demonstrating that the FBCVD method is a viable means of preparing high purity V2O5 via the gaseous hydrolysis of VOCl3. (C) 2019 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
KeywordChlorination procedure High purity VOCl3 FBCVD High purity V2O5 Gaseous hydrolysis Chlorine
DOI10.1016/j.partic.2018.12.005
Language英语
WOS KeywordCHEMICAL-VAPOR-DEPOSITION ; REDOX FLOW BATTERY ; VANADIUM PENTOXIDE ; FILMS ; CHLORINATION ; EXTRACTION ; CATALYST ; PROGRESS ; STORAGE ; GROWTH
Funding ProjectNational Natural Science Foundation of China[51774262] ; National Natural Science Foundation of China[51504231] ; National Natural Science Foundation of China[51504232] ; National Natural Science Foundation of China[21736010] ; Open Project of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization[CNMR-CUKF1704]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China ; Open Project of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization
WOS IDWOS:000518869200002
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39813
Collection中国科学院过程工程研究所
Corresponding AuthorYang, Haitao; Zhu, Qingshan
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Fan, Chuanlin,Xu, Jie,Yang, Haitao,et al. High-purity, low-Cl V2O5 via the gaseous hydrolysis of VOCl3 in a fluidized bed[J]. PARTICUOLOGY,2020,49:9-15.
APA Fan, Chuanlin,Xu, Jie,Yang, Haitao,&Zhu, Qingshan.(2020).High-purity, low-Cl V2O5 via the gaseous hydrolysis of VOCl3 in a fluidized bed.PARTICUOLOGY,49,9-15.
MLA Fan, Chuanlin,et al."High-purity, low-Cl V2O5 via the gaseous hydrolysis of VOCl3 in a fluidized bed".PARTICUOLOGY 49(2020):9-15.
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