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

A technology of glass fiber paper and composite materials, applied in the direction of silicon compounds, separation methods, chemical instruments and methods, etc., can solve the problems of active component sintering, high coating requirements, small specific surface area, etc., and achieve a high degree of order , simple process, large specific surface area

Active Publication Date: 2021-04-02
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

Examples

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Embodiment 1

[0032] A method for preparing an ordered mesoporous silicon-glass fiber paper composite material provided in this embodiment comprises the following steps:

[0033] (1) Soak 50g of silicon powder in hot water for 10 minutes to activate it. When it is thin paste, add it to a three-necked flask filled with 0.5mol / L NaOH solution, stir and heat. The reaction temperature is 90°C, and the reaction time is 8h, obtain nano-silica sol;

[0034] (2) The sodium silicate of 5g is dissolved in the deionized water of 15g, the polyethylene oxide-polyoxypropylene-polyoxyethylene triblock copolymer (P123) of 2g is dissolved in 70mL mass fraction is In 15% hydrochloric acid aqueous solution, mix the above two solutions;

[0035] (3) Pour the mixed solution obtained in step (2) into a hydrothermal reaction kettle for hydrothermal reaction. The reaction conditions are 35°C hydrothermal for 24 hours, 100°C hydrothermal for 24h; then filter, wash, dry, and finally in the muffle Calcined in a furn

Embodiment 2

[0041] A method for preparing an ordered mesoporous silicon-glass fiber paper composite material provided in this embodiment comprises the following steps:

[0042] (1) Soak 50g of silicon powder in hot water for 10 minutes to activate it. When it is thin paste, add it to a three-necked flask filled with 0.5mol / L NaOH solution, stir and heat. The reaction temperature is 90°C, and the reaction time is 8h, obtain nano-silica sol;

[0043] (2) The sodium silicate of 5g is dissolved in the deionized water of 15g, the polyethylene oxide-polyoxypropylene-polyoxyethylene triblock copolymer (P123) of 2g is dissolved in 70mL mass fraction is In 15% hydrochloric acid aqueous solution, mix the above two solutions;

[0044] (3) Pour the mixed solution obtained in step (2) into a hydrothermal reaction kettle for hydrothermal reaction. The reaction conditions are 35°C hydrothermal for 24 hours, 100°C hydrothermal for 24h; then filter, wash, dry, and finally in the muffle Calcined in a furn

Embodiment 3

[0050] A method for preparing an ordered mesoporous silicon-glass fiber paper composite material provided in this embodiment comprises the following steps:

[0051] (1) Soak 50g of silicon powder in hot water for 10 minutes to activate it. When it is thin paste, add it to a three-necked flask filled with 0.5mol / L NaOH solution, stir and heat. The reaction temperature is 90°C, and the reaction time is 8h, obtain nano-silica sol;

[0052] (2) The sodium silicate of 5g is dissolved in the deionized water of 15g, the polyethylene oxide-polyoxypropylene-polyoxyethylene triblock copolymer (P123) of 2g is dissolved in 70mL mass fraction is In 15% hydrochloric acid aqueous solution, mix the above two solutions;

[0053] (3) Pour the mixed solution obtained in step (2) into a hydrothermal reaction kettle for hydrothermal reaction. The reaction conditions are 35°C hydrothermal for 24 hours, 100°C hydrothermal for 24h; then filter, wash, dry, and finally in the muffle Calcined in a furn

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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

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Claims

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Application Information

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Owner TONGJI UNIV
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