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Method of synthesizing ordered mesoporous silica dioxide using cation alkyl glycoside as template agent

A technology of mesoporous silica and alkyl glycosides, applied in the directions of silica, silica, chemical instruments and methods, can solve the problems of poor hydrothermal stability, single structure of mesoporous materials, low thermal stability, etc. To achieve the effect of easy operation, simple synthesis method and short synthesis time

Inactive Publication Date: 2007-02-07
EAST CHINA NORMAL UNIV
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AI Technical Summary

Problems solved by technology

However, the mesoporous material synthesized by this surfactant as a template has a single structure, thin pore wall, poor hydrothermal stability, and relatively low thermal stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Mix 50% cationic alkyl glycoside surfactant (CAPG-08143), water, 1M ammonia water, and tetraethylorthosilicate in a mass ratio of 0.9:20:1.1:2, stir at 19°C for 10 hours, and filter , rinsed with deionized water, dried at 80°C, and calcined in air at 350°C for 4 hours to obtain a white powder product with a yield of 90%. Mesoporous silica in the cubic phase can be obtained with a d value of 6.3nm.

Embodiment 2

[0016] Mix 50% cationic alkyl glycoside surfactant (CAPG-12143), water, 1M ammonia water, and tetraethylorthosilicate in a mass ratio of 0.6:20:1.1:2, stir at 50°C for 10 hours, and filter , rinsed with deionized water, air-dried at 60°C, and calcined in air at 500°C for 4 hours to obtain a white powder product with a yield of 87%. Mesoporous silica in the cubic phase can be obtained with a d value of 5.5nm.

Embodiment 3

[0018] Mix 50% cationic alkyl glycoside surfactant (CAPG-12143), water, 1M ammonia water, and tetraethylorthosilicate in a mass ratio of 1.2:20:1.1:2, stir at 13°C for 10 hours, and filter , rinsed with deionized water, air-dried at 80°C, and roasted in air at 550°C for 4 hours to obtain a white powder product with a yield of 88%. Mesoporous silica in the cubic phase can be obtained with a d value of 7.4nm.

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Abstract

This invention rerlates to a method for preparing orderly mesoporous silicon dioxide material by using anion alkyl glucoside as template. Said method comprises mixing the template and water at a certain pH, then adding silicon resource and stirring, washing, drying, and calcining to obtain the final silicon dioxide material with good thermal stability and hydrothermal stability.

Description

technical field [0001] The invention belongs to the technical field of inorganic porous materials, and in particular relates to a method for synthesizing an ordered mesoporous SiO2 material by using a cationic alkyl glycoside surfactant as a template. Background technique [0002] In 1992, Mobil scientists synthesized the M41S series of silicon-based mesoporous materials, extending the regular pore size of the material from the micropore range to the mesoporous field. Ordered mesoporous materials are a new class of materials with broad application prospects. It has broad application prospects in many research fields such as separation and purification, biological materials, catalysts for chemical synthesis and transformation, semiconductors, optical devices, computers, sensor devices, drug delivery, gas and liquid adsorption, etc. [0003] Currently, mesoporous silica materials with periodic channels can be synthesized under various conditions. The synthesis medium has a v...

Claims

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Application Information

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IPC IPC(8): C01B33/18C01B33/187
Inventor 单永奎王海文孔爱国赵新华陈波
Owner EAST CHINA NORMAL UNIV
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