有序介孔SiO_2分子筛的制备研究

The research on preparation of orderly molecular sieves SiO_2

介孔分子筛材料以其优异的物理化学性能被广泛应用于吸附分离、精细化工、化学催化、石油化工等领域。采用正交实验方法研究有序介孔SiO2的制备工艺,在CTAB与Si比值为0.14,晶化时间48h,晶化温度100℃,焙烧温度600℃条件下最终制得平均孔径为3.80nm,平均比表面积为962.78m2/g,总孔容为0.92cm3/g的有序介孔SiO2。该方法工艺简单、设备要求低、生产周期短,可应用于大规模的工业生产。

Mesoporous material for its excellent physical and chemical properties is widely used in adsorption separation,fine chemicals,chemical catalysis,petroleum and chemical industry.In this paper,orthogonal experimental method is adopted to prepare orderly mesoporous SiO2.At Si in the CTAB ratio 0.14,the crystallization time 48h,crystallization temperature 100℃,the calcination temperature 600℃,orderly mesoporous SiO2 were prepared and the average pore diameter is 3.80nm,the average surface area is 962.78m2/g,the total pore volume is 0.92cm3/g.This method can be used in industrial production for the simple equipment requirements and short production cycle.