锆掺杂MCM-48氧化硅的合成及其表征  

Synthesis and Characterization of Zirconium Substituted MCM-48 Mesoporous Silica

作　　者：季华[1] 魏明杰[1] 范益群[1] 

机构地区：[1]南京工业大学化学化工学院材料化学工程国家重点实验室,南京210009

出　　处：《硅酸盐通报》2007年第5期862-866,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家重点基础研究发展计划(No2003CB615707);国家自然科学基金项目(No20436030)

摘　　要：以正硅酸乙酯为硅源,丙醇锆为锆源,十六烷基三甲基溴化铵为模板剂,通过水热合成法制备Zr-MCM-48介孔材料,提高材料的耐碱性能。利用XRD、N2吸附-脱附、XPS等手段对产物进行了结构和性能的分析。XRD检测显示当Zr/Si物质的量比小于0.1时,可以获得长程有序的MCM-48结构。N2吸附-脱附实验、XPS测试等证实Zr已经掺入MCM-48骨架中。稳定性实验结果表明Zr/Si物质的量比为0.03时,Zr-MCM-48材料的耐碱性能明显增强,进一步表明Zr掺入了MCM-48材料的骨架中。Zirconium substituted MCM-48 mesoporous silica was prepared via hydrothermal synthesis method, using zirconium propoxide as zirconium precursor in order to improve its resistance to alkaline solution. The structure and the micro-morphology of the MCM-48 mesoporous silica with the zirconium were investigated through the analyses of XRD, nitrogen adsorption-desorption isotherm and XPS et al. The XRD shows that the well-ordered MCM-48 was obtained when the Zr/Si molar ration is less than 0. 10. Characterization of nitrogen adsorption-desorption isotherm and XPS confirms that zirconium is incorporated into the framework of the MCM-48. This material showed high stability in the alkaline solution.

关 键 词：介孔 Zr-MCM-48 丙醇锆 锆 

分 类 号：TB32[一般工业技术—材料科学与工程]