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Porous heterogeneous mesoporous material and preparation method thereof

A mesoporous material and heterogeneous technology, applied in the field of mesoporous materials, can solve the problems of poor stability, limited application, unable to adapt to the reaction conditions of heavy oil processing, etc., and achieve the effects of good thermal stability, uniform pore size distribution, and large specific surface area.

Inactive Publication Date: 2011-09-28
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of its pore walls are amorphous and have poor stability, which cannot adapt to the reaction conditions of heavy oil processing, which also limits further applications.

Method used

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  • Porous heterogeneous mesoporous material and preparation method thereof
  • Porous heterogeneous mesoporous material and preparation method thereof
  • Porous heterogeneous mesoporous material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Raw materials: the magadiite sample prepared in Comparative Example 1, cetyltrimethylammonium bromide, ethyl orthosilicate (Beijing Chemical Plant), n-decylamine (product of Beijing Bailingwei Technology Co., Ltd.), deionized water.

[0056] Weigh 1 g of the magadiite sample prepared in Comparative Example 1, mix evenly with cetyltrimethylammonium bromide and deionized water at a molar ratio of 1:9.3:1773, stir at 60°C for 24 hours, wash with water, and centrifuge Afterwards, the sample was obtained by drying in a drying oven at 60° C. for 24 hours. Weigh again 2 g of the sample obtained after drying, mix it with n-decylamine and tetraethyl orthosilicate in a molar ratio of 1:20.5:144, stir for 6 hours, then centrifuge, dry in a 60°C drying oven for 24 hours, and place the product in Calcined at 550°C for 4 hours to obtain a porous heterogeneous mesoporous material.

[0057] The X-ray diffraction pattern of the porous heterogeneous mesoporous material prepared in Examp...

Embodiment 2

[0060] Raw materials: the magadiite sample prepared in Comparative Example 1, tetrabutylammonium bromide, ethyl orthosilicate (Beijing Chemical Plant), n-octylamine (product of Beijing Bailingwei Technology Co., Ltd.), deionized water.

[0061] Weigh 1 g of the magadiite sample prepared in Comparative Example 1, mix it evenly with tetrabutylammonium bromide and deionized water in a molar ratio of 1:14:2364, stir at 80° C. for 16 hours, wash with water, and centrifuge at 60 The samples were obtained by drying in a drying oven at ℃ for 24 hours. Then weigh 2 g of the sample obtained after drying, mix it with n-octylamine and tetraethyl orthosilicate in a molar ratio of 1:29.3:127, stir for 5 hours, then centrifuge, and dry it in a 60°C drying oven for 24 hours. Calcined at 550°C for 5 hours to obtain a porous heterogeneous mesoporous material.

[0062] Product characterization results show that the interlayer spacing of the porous heterogeneous mesoporous material prepared in E...

Embodiment 3

[0065] Raw materials: the magadiite sample prepared in Comparative Example 1, tetraethylammonium hydroxide, ethyl orthosilicate (Beijing Chemical Plant), n-octylamine (product of Beijing Bailingwei Technology Co., Ltd.), deionized water.

[0066] Weigh 1 g of the magadiite sample prepared in Comparative Example 1, mix it evenly with tetraethylammonium hydroxide and deionized water in a molar ratio of 1:13:2068, stir at 70°C for 20 hours, wash with water and centrifuge, The samples were obtained by drying in a drying oven at ℃ for 24 hours. Weigh again 2 g of the sample obtained after drying, mix it with n-octylamine and tetraethyl orthosilicate in a molar ratio of 1:30.4:148, stir for 6 hours, then centrifuge, dry in a 60°C drying oven for 24 hours, and place the product in Calcined at 550°C for 6 hours to obtain a porous heterogeneous mesoporous material.

[0067] The sample characterization results show that the interlayer spacing of the porous heterogeneous mesoporous mate...

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Abstract

The invention relates to a porous heterogeneous mesoporous material and a preparation method thereof, belonging to the technical field of mesoporous materials. A chemical general formula of the porous heterogeneous mesoporous material is Na2SixOy.nH2O, wherein x is not less than 20 or not more than 100, y is not less than 15 or not more than 100; and the porous heterogeneous mesoporous material has interlamellar spacing of 2.0-4.0nm, specific surface area of 400-850m<2> / g, pore volume of 0.2-0.5cc / g and thermal collapse temperature of 600-900 DEG C. The preparation method comprises the steps of: carrying out hydro-thermal treatment on a mixture containing a silicon source, sodium hydroxide and water to obtain a product a; carrying out constant-temperature stirring on a mixture containing the product a, a first template agent and water to obtain a product b; and uniformly stirring a mixture containing the product b, a second template agent and tetraethoxysilane and then calcining. The porous heterogeneous mesoporous material has better mesoporous structure distribution, larger specific surface area and pore volume and better stability, and can be widely applied to fields such as petroleum refining, heavy oil upgrading, absorption, bleaching, ion exchange and the like.

Description

technical field [0001] The invention belongs to the technical field of mesoporous materials, and in particular relates to a porous heterogeneous mesoporous material and a preparation method thereof, which can be widely used in the fields of petroleum refining, heavy oil processing, adsorption, bleaching, ion exchange and the like. Background technique [0002] The current demand for petroleum products is very strong, but petroleum components are becoming increasingly heavy, so the demand for processing heavy petroleum is becoming more and more urgent. Existing molecular sieve catalysts for petroleum refining have the advantages of regular pore structure, strong acidity, and good hydrothermal stability, but their pore size remains in the range of micropores, which cannot meet the current needs of processing heavy oil macromolecules. Therefore, it has become particularly important to develop heavy oil processing catalysts with larger pore sizes. [0003] The development of pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/04C01B33/32
Inventor 杜冰张丛张慧段雪
Owner BEIJING UNIV OF CHEM TECH
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