CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Mechanism and kinetics of titanium hydrolysis in concentrated titanyl sulfate solution based on infrared and Raman spectra
Wang, Weijing; Liu, Yahui; Xue, Tianyan; Li, Jie; Chen, Desheng; Qi, Tao
2015-09-29
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume134Issue:SEPPages:196-204
Abstract

The titanium hydrolysis in the concentrated titanyl sulfate solution is essential to the TiO2 production by using the new NaOH roasting method proposed by authors, which is undergoing to scale up. The experimental titanium hydrolysis was detected by the infrared and Raman spectra for the first time to reveal the significant role of SO42- ions. The bridging bidentate SO42- ligands arrange the Ti-O octahedra of hydrated titanium dioxide (HTD) in zigzag chains along the crystal face (221) to form anatase structure and are changed into unidentate SO42- ligands and free bisulfate ions step by step with increasing hydrolysis time. This proposed mechanism of titanium hydrolysis in titanyl sulfate solution was applied to establish a new kinetic model x=1 -k(n)e(-kn)(2k(m)c(Tl)(0)/1-+1)/2k(m)C(Tl)(0) [Ei(k(n)t+2k(m)C(Tl)(0)/k(n)) - Ei(2k(m)C(Tl)(0)/k(n))] - e(-knt),

KeywordTitano-sulfate Complex Ftir Spectrum Raman Spectrum Triply-degenerate Mode Hydrolysis Kinetics
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2015.05.006
Indexed BySCI
Language英语
WOS KeywordMOLTEN-SALT METHOD ; SULFURIC-ACID ; METALLIC COMPLEXES ; ANATASE PARTICLES ; DIOXIDE ; PRECIPITATION ; RUTILE ; TIO2 ; SPECIATION ; PIGMENT
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000359029200018
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19428
Collection湿法冶金清洁生产技术国家工程实验室
AffiliationChinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Weijing,Liu, Yahui,Xue, Tianyan,et al. Mechanism and kinetics of titanium hydrolysis in concentrated titanyl sulfate solution based on infrared and Raman spectra[J]. CHEMICAL ENGINEERING SCIENCE,2015,134(SEP):196-204.
APA Wang, Weijing,Liu, Yahui,Xue, Tianyan,Li, Jie,Chen, Desheng,&Qi, Tao.(2015).Mechanism and kinetics of titanium hydrolysis in concentrated titanyl sulfate solution based on infrared and Raman spectra.CHEMICAL ENGINEERING SCIENCE,134(SEP),196-204.
MLA Wang, Weijing,et al."Mechanism and kinetics of titanium hydrolysis in concentrated titanyl sulfate solution based on infrared and Raman spectra".CHEMICAL ENGINEERING SCIENCE 134.SEP(2015):196-204.
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