Mesoporous-microporous composite material and synthesis method thereof

A synthesis method and technology of composite materials, which are applied in the field of composite materials with mesoporous structure and microporous structure and their synthesis, can solve the problems of poor thermal stability and hydrothermal stability and limit applications, and achieve the effect of wide application prospects

Inactive Publication Date: 2007-08-08
DALIAN UNIV OF TECH
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Problems solved by technology

The disadvantages of this material are poor thermal stability and hydrothermal stability, and the pore walls are amorphous, which limits its application.

Method used

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  • Mesoporous-microporous composite material and synthesis method thereof

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Embodiment Construction

[0010] Specific embodiments of the present invention will be described in detail below.

[0011] Synthesis of Mesoporous-Microporous Composite Materials

[0012] Sodium metasilicate powder was used to prepare an aqueous solution with a concentration of 20.4% (by mass), and 14 milliliters of the aqueous solution was measured. Weigh 1.0 gram of ZSM-5 zeolite molecular sieve (SiO 2 / Al 2 o 3 =26, the particle size is about 400nm), added to the sodium metasilicate aqueous solution, reacted at 55°C for 30 minutes, and put it into the ice-water mixture for 10 minutes to quench. Then 72 ml of cetyltrimethylammonium bromide (CTAB) aqueous solution (concentration 3.8% (mass)) was added, and the pH value of the above mixed solution was adjusted to 11 with 6M sulfuric acid. Then, it was aged for 2 hours under the condition of vigorous stirring, and transferred to a stainless steel autoclave lined with polytetrafluoroethylene at 120° C. for 48 hours. The obtained solid product was wa...

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Abstract

The invention discloses a dielectric hole-microhole composite material and synthesizing method in the inorganic porous material, adsorbing material and catalytic material technical domain, which comprises the following steps: adopting zeolite molecular sieve as raw material; reacting with sodium bisilicate solution under 30-60 deg.c for 10-300 min; disintegrating particle part of zeolite molecular sieve into piece with microhole structure; adding cetyl trimethyl ammonium bromide as molder; adjusting pH value of mother liquid to 10-12; aging 1-8h; adding in the high-pressure autoclave to do water heat synthesizing reaction at 80-130 deg.c for 24-72h; separating solid; washing; drying; sintering under 500-600 deg.c for 5-10h; obtaining the Si-Al porous material with dielectric hole and microhole composite structure.

Description

technical field [0001] The invention belongs to the technical field of inorganic porous materials, adsorption materials and catalytic materials, and relates to a composite material with a mesopore structure and a microporous structure and a synthesis method thereof. technical background [0002] Due to its specific pore structure and high specific surface area, porous materials can be used as supports for adsorbents and solid catalysts, and are widely used in the fields of chemical industry, light industry, energy, environmental protection and aerospace. Porous materials are divided into macroporous, mesoporous and microporous materials according to the size of the pore size. Zeolite molecular sieve has a specific pore structure, and the pore size belongs to the category of micropores, which is a typical microporous material. Since zeolite molecular sieves can change the skeleton and surface properties of molecular sieves through ion exchange, they have very important appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/04B01J29/06B01J20/18
Inventor 王安杰王林英李翔
Owner DALIAN UNIV OF TECH
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