苄基磺酸接枝MCM-41介孔分子筛的合成与表征  

Synthesis and Characterization of Benzyl Sulphonic Acid Functionalized MCM-41

作　　者：陈静[1] 韩梅[1] 孙蕊[1] 王锦堂[1] 

机构地区：[1]南京工业大学理学院应用化学系,南京210009

出　　处：《无机化学学报》2006年第9期1568-1572,共5页Chinese Journal of Inorganic Chemistry

基　　金：中国石油化工股份有限公司资助项目(No.J102012)。

摘　　要：在采用溶胶-凝胶法合成纯硅MCM-41基础上,经过两步后合成处理,在纯硅MCM-41上接枝苄基磺酸,并通过X射线衍射、低温氮气吸附、红外光谱、元素分析、热重分析和酸度滴定,对所得样品进行了表征。结果表明,经过苯甲醇、氯磺酸两步接枝处理,苄基及磺酸成功地接入MCM-41上,并保持MCM-41的介孔结构,接枝后的磺酸型MCM-41比表面积和孔容均减小,分别为976m2·g-1和0.42cm3·g-1,酸量为4.2mmol·g-1。Mesoporous MCM-41 was prepared through sol-gel method and functionalized with benzyl sulphonic acid using a post-synthetic procedure. The benzyl and sulphonic acid groups are covalently bonded to the surface of MCM-41 by etherification of Si-OH with benzyl alcohol and subsequent sulphonation reaction. The material was characterized by X-ray powder diffraction （XRD）, nitrogen adsorption-desorption, IR spectroscopy, elementary analysis, TGA and acidity titration. Mesoporous structure is still remained in SO3H-MCM-41. The benzyl sulphonic acid was attached successfully to the surface of the mesoporous material. The BET surface area is 976 m^2·g^-1 and the pore volume is 0.42 cm^3·g^-1. The acid capacity is 4.2 mmol·g^-1.

关 键 词：介孔材料 后合成方法 磺酸型MCM-41 接枝 

分 类 号：O643[理学—物理化学]