Pore structures of methyl-modified silica xerogels by small angle x-ray scattering
Xu, Y; Li, ZH; Fan, WH; Wu, D; Sun, YH; Wang, J; Dong, BZ; Wang J(王俊); Dong BZ(董宝中)
刊名ACTA PHYSICA SINICA
2003
卷号52期号:3页码:635-640
关键词small angle x-ray scattering methyl-modified silica xerogel pore structure
学科分类Physics
其他题名小角x 射线散射方法研究甲基改性氧化硅干凝胶的孔结构
通讯作者Chinese Acad Sci, Shanxi Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Natl Synchrotron Radiat Lab, Beijing 100039, Peoples R China
文章类型Article
英文摘要Two kinds of methyl-modified silica xerogels were prepared by mixing SiO2 colloidal suspension deriving from basic-catalyzed hydrolysis of TEOS (tetraethoxysilane) and siloxane polymer solution prepared from acid-catalyzed hydrolysis of MTES (methyl-triethoxysilane) or DDS (dimethyldiethoxysilane). The xerogels were tested at the small angle x-ray scattering (SAXS) station of Beijing Synchrotron Radiation Facility. The distribution of pore size, the average size of pores D-SAXS, and the thickness of interface layer E were calculated. With the aid of nitrogen adsorption measurement, the pore structure was analyzed. Some micropores were found to be produced in methyl-modified SiO2 xerogels while second-aggregates were constructed through connecting first-aggregates with siloxane polymer of MTES or of DDS. At the same time, methyl groups were attached to the bone of SiO2 clusters and become an interface layer between bone and pore. The interface layer have effects on both pore size and the adsorption of nitrogen in methyl-modified xerogels. Through transmission electron microscope we confirmed that the pore structures of the xerogels were affected strongly by the two different siloxane polymers. SAXS is a powerful technique to study pore structure of xerogel system.
类目[WOS]Physics, Multidisciplinary
研究领域[WOS]Physics
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语种英语
WOS记录号WOS:000181642200023
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238156
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
作者单位中国科学院高能物理研究所
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Xu, Y,Li, ZH,Fan, WH,et al. Pore structures of methyl-modified silica xerogels by small angle x-ray scattering[J]. ACTA PHYSICA SINICA,2003,52(3):635-640.
APA Xu, Y.,Li, ZH.,Fan, WH.,Wu, D.,Sun, YH.,...&董宝中.(2003).Pore structures of methyl-modified silica xerogels by small angle x-ray scattering.ACTA PHYSICA SINICA,52(3),635-640.
MLA Xu, Y,et al."Pore structures of methyl-modified silica xerogels by small angle x-ray scattering".ACTA PHYSICA SINICA 52.3(2003):635-640.
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