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Influence and hydrolysis kinetics in titanyl sulfate solution from the sodium hydroxide molten salt method
Wang, Weijing1,2; Chen, Desheng2; Chu, Jinglong2; Li, Jie2; Xue, Tianyan2; Wang, Lina2; Wang, Dong1,2; Qi, Tao2
2013-10-15
Source PublicationJOURNAL OF CRYSTAL GROWTH
Volume381Issue:0Pages:153-159
AbstractHydrated titanium dioxide (HTD) was precipitated by thermal hydrolysis in purified titanyl sulfate solution (TSS) obtained through the sodium hydroxide molten salt clean method. Various factors including the stirring speed and initial concentrations of TiOSO4, sulfuric acid, and sodium ion were studied. The main influence factors in the hydrolysis process were the initial concentrations of TiOSO4 and sulfuric acid. Contrary to the ferrous ion, the sodium ion improved the ionic activity of Ti4+, but did not decrease the crystal size. The Boltzman growth model (x=A(2)+(A(1) - A(2))/{1+exp[(t - t(0))/dt)]}, which focuses on two main parameters (C-TiOSO4 and C-H2SO4), fits the hydrolysis process well with R-2 > 0.97. An increase in sulfuric acid concentration negatively affected the hydrolysis rates and the value of A(2), while t(0) increased. An increase in titanyl sulfate concentration directly reduced the hydrolysis rates and particle size of HTD, contrary to the trend for the value of t(0). A simulation software called 1stopt was used to observe the relationship between Z (A(1), A(2), t(0), dt) and a, b (C-TiO2 and C-H2SO4). (c) 2013 Elsevier B.V. All rights reserved.
KeywordGrowth Models Hydrolysis Process Minerals Sodium Sulfate Titanyl Sulfate Solution
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
Language英语
WOS KeywordTHERMAL-HYDROLYSIS ; ANATASE PARTICLES ; RUTILE ; PRECIPITATION ; TIO2 ; OXIDES
WOS Research AreaCrystallography ; Materials Science ; Physics
WOS SubjectCrystallography ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000324303500028
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Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13677
Collection研究所(批量导入)
Affiliation1.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Weijing,Chen, Desheng,Chu, Jinglong,et al. Influence and hydrolysis kinetics in titanyl sulfate solution from the sodium hydroxide molten salt method[J]. JOURNAL OF CRYSTAL GROWTH,2013,381(0):153-159.
APA Wang, Weijing.,Chen, Desheng.,Chu, Jinglong.,Li, Jie.,Xue, Tianyan.,...&Qi, Tao.(2013).Influence and hydrolysis kinetics in titanyl sulfate solution from the sodium hydroxide molten salt method.JOURNAL OF CRYSTAL GROWTH,381(0),153-159.
MLA Wang, Weijing,et al."Influence and hydrolysis kinetics in titanyl sulfate solution from the sodium hydroxide molten salt method".JOURNAL OF CRYSTAL GROWTH 381.0(2013):153-159.
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