苯基官能化MCM-48介孔材料的制备和表征  

Synthesis and characterization of phenyl-functionalized MCM-48

作　　者：李春兰[1] 杜新贞[1] 王雪梅[1] 曹旭[1] 陈慧[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2008年第3期54-56,110,共4页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(20735031);甘肃省高分子材料重点实验室基金资助项目

摘　　要：以正硅酸乙脂为硅源,十六烷基三甲基溴化铵为结构模板剂,苯基三甲氧基硅烷为偶联剂,用共水解缩聚一步合成了苯基官能化的介孔二氧化硅(C6H5-MCM-48)材料.用小角X射线衍射(SAXRD)、红外光谱(FT-IR)、热重分析(TGA)和N2吸附-脱附对材料进行了表征.结果表明,苯基已成功键合至孔道表面形成了无机/有机介孔复合体材料,且具有MCM-48的孔道结构特征,改性后的C6H5-MCM-48较纯硅MCM-48材料具有较窄的孔径分布,较大的孔体积和较高的比表面积.The phenyl-functionalized MCM-48 material（C6H5-MCM-48） has been synthesized by the co-condensation of tetraethoxysilane and phenytrimethoxysiliane by using cetyltrimethylammonium bromide as templating agent under alkaline reaction conditions.The materials before and after functionalization are characterized by SAXRD,FT-IR,TGA and N2 adsorption-desorption.The results show that the MCM-48-type inorganic/organic composite with gyroid structure has been prepared and the material has narrow pore-size disrtribution,high surface area and large mesopore volume.

关 键 词：介孔二氧化硅 MCM-48 介孔复合体 苯基硅烷化 

分 类 号：TB383[一般工业技术—材料科学与工程]