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	Preparation of spherical TiO/sub 2/ and kinetics of its hydrolysis process
	Hu Mei-Long ; Xu Sheng-Ming ; Bai Chen-Guang ; Xu Gang ; Lu Xue-Wei
	2010-10-12 ; 2010-10-12
关键词	Experimental/ electrokinetic effects materials preparation particle size permittivity titanium compounds/ hydrolysis process titanium sulfate precursor concentration precursor temperature hydrolysis rate mass fraction Avrami equation dielectric constant zeta potential hydrolysis temperature precursor concentration particle size distribution dispersibility TiO/sub 2// A8120L Preparation of ceramics and refractories A7720 Dielectric permittivity A8245 Electrochemistry and electrophoresis/ TiO2/bin O2/bin Ti/bin O/bin
中文摘要	Spherical titania was prepared by a hydrolysis method of titanium sulfate as the precursor. The effects of the precursor concentration and temperature on the hydrolysis rate were discussed. Results showed that an exponential relationship existed between the mass fraction of titania and hydrolysis time. These results were confirmed by the Avrami equation. The effect of the medium on the hydrolysis rate was also discussed. The hydrolysis rate could be controlled by adjusting the dielectric constant and the zeta potential. By analysis of the preparation procedure of the spherical titania and the kinetics thereof, we conclude that a low precursor concentration, high hydrolysis temperature, and adaptive medium are the key points for the preparation of high quality titania with narrow particle size distribution and good dispersibility.
语种	中文
出版者	Editorial Board of Acta Physico-Chimica Sinica ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79357]
专题	清华大学
推荐引用方式 GB/T 7714	Hu Mei-Long,Xu Sheng-Ming,Bai Chen-Guang,et al. Preparation of spherical TiO/sub 2/ and kinetics of its hydrolysis process[J],2010, 2010.
APA	Hu Mei-Long,Xu Sheng-Ming,Bai Chen-Guang,Xu Gang,&Lu Xue-Wei.(2010).Preparation of spherical TiO/sub 2/ and kinetics of its hydrolysis process..
MLA	Hu Mei-Long,et al."Preparation of spherical TiO/sub 2/ and kinetics of its hydrolysis process".(2010).

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