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	Influence of temperature schedules on particle size and crystallinity of titania synthesized by vapor-phase oxidation route
	Wang, Zhi; Yuan, Zhangfu; Zhou, E.
刊名	POWDER TECHNOLOGY
	2006-12-14
卷号	170期号:3页码:135-142
关键词	titania titanium tetrachloride crystallinity particle size gas phase route
ISSN号	0032-5910
其他题名	Powder Technol.
中文摘要	Crystalline TiO2 particles were produced in a tubular flow reactor by chemical vapor synthesis using titanium tetrachloride as a starting material in oxygen containing atmospheres. The dependence of particle size, morphology and crystalline phase of titania on temperature schedules including the reactor temperature, the oxygen preheated temperature and the product cooling measure were explored. It is found that there are two opposite effects of temperature on particle size and crystalline phase content. The particle size distribution, SEM and TEM of resulting powders show that the grain size is controlled by the relative magnitudes of the nucleation rate and growth rate, both of them being subject to the temperature schedules. XRD indicates that particles crystalline phase is predominately anatase and the rutile content increment is not consistent with temperature increase. Anatase titania can be converted to rutile by addition of crystal modifier AlCl3. The element analysis by EDS shows that Al enriches on the particle outer surface. (c) 2006 Elsevier B.V. All rights reserved.
英文摘要	Crystalline TiO2 particles were produced in a tubular flow reactor by chemical vapor synthesis using titanium tetrachloride as a starting material in oxygen containing atmospheres. The dependence of particle size, morphology and crystalline phase of titania on temperature schedules including the reactor temperature, the oxygen preheated temperature and the product cooling measure were explored. It is found that there are two opposite effects of temperature on particle size and crystalline phase content. The particle size distribution, SEM and TEM of resulting powders show that the grain size is controlled by the relative magnitudes of the nucleation rate and growth rate, both of them being subject to the temperature schedules. XRD indicates that particles crystalline phase is predominately anatase and the rutile content increment is not consistent with temperature increase. Anatase titania can be converted to rutile by addition of crystal modifier AlCl3. The element analysis by EDS shows that Al enriches on the particle outer surface. (c) 2006 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	TIO2 POWDER ; MORPHOLOGY ; CONDENSATION ; COAGULATION ; EVOLUTION ; TICL4
收录类别	SCI
原文出处	://WOS:000243800600003
语种	英语
WOS记录号	WOS:000243800600003
公开日期	2013-10-24
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/3998]
专题	过程工程研究所_研究所（批量导入）
作者单位	Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhi,Yuan, Zhangfu,Zhou, E.. Influence of temperature schedules on particle size and crystallinity of titania synthesized by vapor-phase oxidation route[J]. POWDER TECHNOLOGY,2006,170(3):135-142.
APA	Wang, Zhi,Yuan, Zhangfu,&Zhou, E..(2006).Influence of temperature schedules on particle size and crystallinity of titania synthesized by vapor-phase oxidation route.POWDER TECHNOLOGY,170(3),135-142.
MLA	Wang, Zhi,et al."Influence of temperature schedules on particle size and crystallinity of titania synthesized by vapor-phase oxidation route".POWDER TECHNOLOGY 170.3(2006):135-142.

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