酸性条件下介孔二氧化硅材料的制备

Preparation of the mesoporous silica material under acidic condition

非离子表面活性剂为结构模板剂，在高于硅的等电点条件下（pH=2—5），采用预水解法，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、反应温度等因素对合成出的介孔材料具有重要作用．

The synthesis of mesoporous silica material by pre-hydrolytic method above the isoelectric point of silica in acidic condition （ pH = 2 - 5 ） is studied in this paper. The synthesized material uses polymer surfacrant and non-ionic surfactant-oligomeric alkyl-ethylene oxide as the template. It was found that the factors of acidity, reaction temperature have significant effects on the synthesized mesoporous material.