以非离子模板剂两步法合成介孔二氧化硅

Preparation of the mesoporous silica material by Non-Ionically Template via two-step synthesis

以聚乙氧烯(20)失水山梨醇酯为结构模板剂,在高于硅的等电点条件下(pH为2～5),采用预水解两步法,合成了介孔氧化硅材料.分析了介孔氧化硅材料的合成过程,认为酸度、无机盐等因素对介孔二氧化硅有重要影响.

The mesoporous silica material was synthesized by pre-hydrolytic two-step method when above the isoelectric point of silica in acidic condition（pH=2~5）.The ethoxylated derivatives of fatty esters of sorbitan（Tween20）was used as the template.It was found that the factors of acidity,inorganic salt have significant effects on the synthesized mesoporous silica material