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	Effects of SO42- on the heterogeneous precipitation coating of hydrous alumina on TiO2 particles in an aqueous process
	Wu, Hai-Xia ; Wang, Ting-Jie ; Duan, Jun-Ling ; Jin, Yong
	2010-05-07 ; 2010-05-07
关键词	MORPHOLOGY WHISKERS POWDERS Engineering, Chemical
中文摘要	The effects of foreign inorganic anions on the coating morphologies of TiO2 particles were experimentally studied by investigating the effects of divalent SO42- anions on the precipitation rate, crystallization behavior, and heterogeneous precipitation coating of hydrous alumina. The pH change and critical point of precipitation during base titration into Al3+ solutions were investigated. The precipitation rate of OH-Al species was accelerated by an increase in SO42- concentration, while the crystallization rate was little changed, so that the crystallization was poor and amorphous gels were preferentially formed. Under the same condition, Al(OH)(3) gels obtained from Al-2(SO4)(3) solution or the Al3+ solution with added SO42- anions were close to amorphous, while the Al(OH)(3) gels from a pure Al(NO3)(3) solution were close to crystalline. The conditions conducive for forming amorphous gels were conducive to forming film coating on the core particle surface.
语种	英语 ; 英语
出版者	AMER CHEMICAL SOC ; WASHINGTON ; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/17573]
专题	清华大学
推荐引用方式 GB/T 7714	Wu, Hai-Xia,Wang, Ting-Jie,Duan, Jun-Ling,et al. Effects of SO42- on the heterogeneous precipitation coating of hydrous alumina on TiO2 particles in an aqueous process[J],2010, 2010.
APA	Wu, Hai-Xia,Wang, Ting-Jie,Duan, Jun-Ling,&Jin, Yong.(2010).Effects of SO42- on the heterogeneous precipitation coating of hydrous alumina on TiO2 particles in an aqueous process..
MLA	Wu, Hai-Xia,et al."Effects of SO42- on the heterogeneous precipitation coating of hydrous alumina on TiO2 particles in an aqueous process".(2010).

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