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Selective hydrolysis of trace TiCl4 from VOCl3 for preparation of high purity V2O5
Fan, Chuanlin1; Yang, Haitao1; Zhu, Qingshan1,2
2017-09-12
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume185Pages:196-201
Abstract

Given the strong demands for high purity vanadium products dedicated for all-vanadium redox flow battery (VRFB), numerous preparation technologies have been developed. One of them, the chloride process that using vanadium oxytrichloride (VOCl3) as purification intermediate presents distinct technical advantages. The intermediate is readily purified via distillation process to remove most of the impurities. However, the trace titanium tetrachloride (TiCl4) is difficult to be removed, due to close saturated vapor pressures. In present work, based on thermodynamic calculation and analyses, we found that TiCl4 reacts with water significant preferentially to form the corresponding oxide, compared with VOCl3. Then we proposed a novel method to remove trace TiCl4 from VOCl3 by selective hydrolysis - distillation. The related experiments were conducted and validated the feasibility of the innovative process. Vanadium pentoxide (V2O5) with purity higher than 99.99 wt% (4N) was further prepared from the purified VOCl3 by precipitation calcination. (C) 2017 Elsevier B.V. All rights reserved.

KeywordHigh Purity Vanadium Pentoxide Chlorination Process Vanadium Oxytrichloride Titanium Tetrachloride Selective Hydrolysis
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.seppur.2017.05.002
Indexed BySCI
Language英语
WOS KeywordRedox Flow Batteries ; Vanadium ; Electrolyte ; Performance ; Separation ; Extraction ; Storage ; Energy
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China(51504232 ; 51504231 ; 21325628)
WOS IDWOS:000404310900020
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22709
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Fan, Chuanlin,Yang, Haitao,Zhu, Qingshan. Selective hydrolysis of trace TiCl4 from VOCl3 for preparation of high purity V2O5[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2017,185:196-201.
APA Fan, Chuanlin,Yang, Haitao,&Zhu, Qingshan.(2017).Selective hydrolysis of trace TiCl4 from VOCl3 for preparation of high purity V2O5.SEPARATION AND PURIFICATION TECHNOLOGY,185,196-201.
MLA Fan, Chuanlin,et al."Selective hydrolysis of trace TiCl4 from VOCl3 for preparation of high purity V2O5".SEPARATION AND PURIFICATION TECHNOLOGY 185(2017):196-201.
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