Structure and acid-base properties of surface-modified mesoporous silica

被引：24

作者：

Chen, Ying ^{[1
]}

Han, Jinyu ^{[1
]}

Zhang, Haitao ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, State Educ Minist, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 24期

关键词：

mesoporous materials; acid-base properties; MgO-ZrO2-SBA-15; surface modification;

D O I：

10.1016/j.apsusc.2007.05.083

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of surface-modified mesoporous silica endowing with acid-base properties have been successfully synthesized in one pot by in situ introduction of zirconium and magnesium salts into the initial mixture of synthesizing mesoporous silica (SBA-15) and this method combines into a single step to form a novel material with a periodically ordered mesoporous backbone and specific chemical reactivity of the acid-basic sites. X-ray diffraction, high-resolution transmission electron microscopes (HRTEM), N-2 adsorption, FT-IR transmission spectra Si-29 MAS NMR spectra, NH3- and CO2-temperature programmed desorption (TPD) are employed to characterize the titled mesoporous materials. The results indicate that the product possesses excellent acid-basic properties with well mesoporous structure, which make it promising for their application in heterogeneous catalysis and adsorption-separation processes. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：9400 / 9406

页数：7

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