Ordered mesoporous silica-glass fiber paper composite material as well as preparation method and application thereof

Abstract

The invention provides an ordered mesoporous silica-glass fiber paper composite material as well as a preparation method and application thereof. The preparation method comprises the following specific steps of: synthesizing an ordered mesoporous silica material with high orderliness and high specific surface area by taking sodium silicate as a silicon source; fully mixing the mesoporous silica material with silica sol by taking the nano silica sol as a binder; adding ammonia water to adjust the pH value to enable colloidal particles to be slowly polymerized to form stable mesoporous silica gel; and completing soaking pretreated glass fiber paper in the mesoporous silica gel to make the pretreated glass fiber paper and the mesoporous silica gel fully bonded, and carrying out drying and curing. The mesoporous silica material is high in specific surface area, large in pore volume, good in degree of order and high in stability. Meanwhile, the nano silica sol has the advantages of large specific surface area, strong binding force and the like, and has good advantages as a carrier of a gas-solid catalyst. The composite material prepared by the preparation method is high in degree of order, good in stability, large in adsorption capacity and high in catalytic efficiency, and the removal rate of volatile organic compounds (VOCs) can be greatly increased.

Description

technical field [0001] The invention belongs to the field of environmental protection, and specifically relates to an ordered mesoporous silicon-glass fiber paper composite material, a preparation method thereof and an application in removing different volatile organic compounds. Background technique [0002] Catalytic combustion technology is widely used as an effective method to remove gaseous pollutants. Among them, the catalyst is generally composed of a carrier, a porous coating with a high specific surface area, and an active component, which together determine the efficiency and energy consumption of the treatment. At present, particle catalysts have poor mass and heat transfer effects, are prone to sintering of active components due to local high temperatures, high energy consumption and low treatment efficiency, so they are generally used for the degradation of industrial low space velocity VOCs; honeycomb catalysts are often used for industrial high space velocity ...

AI Technical Summary

Problems solved by technology

At present, particle catalysts have poor mass and heat transfer effects, are prone to sintering of active components due to local high temperatures, high energy consumption and low treatment efficiency, so they are generally used for the degradation of industrial low space velocity VOCs; honeycomb catalysts are often used for industrial high space velocity VOCs. However, the defects such as small specific surface area and high requirements for coating limit its application to a certain extent.

Images