硅酸盐学报2009，Vol.37Issue(11)：1859-1863,5.
高比表面磺酸基改性介孔材料SBA-16的合成与催化活性
SYNTHESIS AND CATALYTIC ACTIVITY OF SILYLATED SILICA MESOPOROUS MATERIAL SBA-16
亢宇 1谢伦嘉 1王彦强 1王伟 1赵思源1
作者信息
- 1. 中国石油化工股份有限公司北京化工研究院,北京,100013
- 折叠
摘要
Abstract
The silylated silica mesoporous material SBA-16 containing 2-(4-sulfopheny)ethyl groups was synthesized from a simple synthesis approach using triblock copolymer poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (EO_(106)PO_(70)EO_(106), F127) and 2-(4-chlorosulphonylphenyl)ethyltrimethoxylsilane in methylene chloride. The structure, morphology and composition of the silylated SBA-16 were investigated by X-ray diffraction, nuclear magnetic resonance spectra, scanning electron microscopy and X-ray fluorescence spectroscopy, and the reaction products of acetic acid and alcohol catalyzed by the silylated SBA-16 were analyzed by gas chromatography. The results show that the silylated SBA-16 is composed of micro particles with well-distributed particle sizes. It has a cubic centered structure with a space group of Im3m, and has cube cage structure pores and pore network connectivity and a high specific surface area of 1 028m~2/g. The catalytic activities of the silylated SBA-16 for the esterication of acetic acid and alcohol are excellent. The conversion ratios of acetic acid and selectivity to ethyl acetate for the silylated SBA-16 as a catalyst are 97% and 99% in the first time reaction, respectively. After 4 times of catalytic reaction, the conversion ratios of acetic acid and selectivity to ethyl acetate always remained at 97% and 99%.关键词
介孔二氧化硅分子筛/比表面积/硅烷化/催化剂Key words
mesoporous silica molecular sieve/specific surface area/silylation/catalyst分类
化学引用本文复制引用
亢宇,谢伦嘉,王彦强,王伟,赵思源..高比表面磺酸基改性介孔材料SBA-16的合成与催化活性[J].硅酸盐学报,2009,37(11):1859-1863,5.
