Research on a new process of preparation for nano-SiO2 with high activity and mesopores

IMR OpenIR

	Research on a new process of preparation for nano-SiO2 with high activity and mesopores
	Zhang, RJ; Yang, K; Xiong, TY
通讯作者	Zhang, RJ(rjzhang@imr.ac.cn)
	2004-05-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	20 期号:3 页码:353-356
摘要	Nano-SiO2 with high activity and mesopores was prepared through sol-gel synthesis followed by low-temperature heat treatment and ball milling firstly in our experiments. TEM was performed to measure particle sizes. Nitrogen adsorption experiments were carried out to estimate specific surface area, porous distribution and porous ratio by BET and BJH methods. The content of Si-OH in SiO2 surface was calculated by analysis of the results of hydrogen-oxygen content mensuration (HOCM). As a result, appropriate heat treatment system and ball milling time are important to preparation for nano-SiO2 with high activity and mesopores, which are 5similar to50 nm particles, 5similar to6 nm average aperture, 85%similar to93% porous ratio, and 51%similar to55% Si-OH content in surface. Nano-SiO2 with that structure has high surface energy and activity. This process, which has simple facilities and operation rules, is a new way of preparation for nano-SiO2 with high activity and mesopores.
关键词	heat treatment ball milling mesopores nano-SiO2
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000221826900030
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/82441
专题	中国科学院金属研究所
通讯作者	Zhang, RJ
作者单位	Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, RJ,Yang, K,Xiong, TY. Research on a new process of preparation for nano-SiO2 with high activity and mesopores[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2004,20(3):353-356.
APA	Zhang, RJ,Yang, K,&Xiong, TY.(2004).Research on a new process of preparation for nano-SiO2 with high activity and mesopores.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,20(3),353-356.
MLA	Zhang, RJ,et al."Research on a new process of preparation for nano-SiO2 with high activity and mesopores".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 20.3(2004):353-356.