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 | |
刊名 | CHEMICAL ENGINEERING SCIENCE |
2015-09-29 | |
卷号 | 134期号:SEP页码:196-204 |
关键词 | Titano-sulfate complex FTIR spectrum Raman spectrum Triply-degenerate mode Hydrolysis Kinetics |
ISSN号 | 0009-2509 |
英文摘要 | 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), |
WOS标题词 | Science & Technology ; Technology |
类目[WOS] | Engineering, Chemical |
研究领域[WOS] | Engineering |
关键词[WOS] | MOLTEN-SALT METHOD ; SULFURIC-ACID ; METALLIC COMPLEXES ; ANATASE PARTICLES ; DIOXIDE ; PRECIPITATION ; RUTILE ; TIO2 ; SPECIATION ; PIGMENT |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000359029200018 |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/19428] |
专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
作者单位 | Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China |
推荐引用方式 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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