酸性条件下合成纯硅六方介孔分子筛的条件探索  

Investigation on Conditions for Synthesis of Hexagonal Mesoporous Silica in Acidic Medium

作　　者：贾雪平[1] 杨春[1] 

机构地区：[1]南京师范大学化学与环境科学学院,南京210097

出　　处：《南京师大学报（自然科学版）》2001年第1期73-78,共6页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：江苏省教育委员会自然科学基金!资助项目 (编号 2 0 0 0HXX0 0 0 0SJ3)

摘　　要：以十六烷基三甲基溴化铵为模板剂 ,正硅酸乙酯为硅源 ,在酸性条件下合成了纯硅六方介孔分子筛 .对晶化温度、陈化时间、酸介质的用量和种类等合成条件进行了考察 ,发现合成条件对样品的结晶度、结构有序性、孔径、壁厚等有明显影响 ,讨论了这种影响产生的原因和酸性介质中合成纯硅介孔分子筛的适宜条件 .Hexagonal mesoporous silica were synthesized in acidic medium by using cetyltrimethylammonium bromide(C 16 TMABr) as template and tetramethy1 orthoslicate(TEOS) as silica source.The conditions for synthesis such as crystallizing temperature,aging time,acidic content and species were investigated.It has been found that these conditions influence obviously the crystallinity,structure ordering,pore size and pore wall thickness of the samples.The reason of the effects and proper synthesis conditions are discussed.

关 键 词：纯硅六方介孔分子筛 酸介质 合成条件 晶体温度 陈化时间 结晶度 结构有序化 

分 类 号：O643.36[理学—物理化学]