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Preparation method of short hole SBA-15 mesopore silicon base material

A silicon-based material, short-pore technology, applied in the direction of crystalline aluminosilicate zeolite

Inactive Publication Date: 2007-03-07
JINKAI INSTR DALIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of short-pore SBA-15 has not been reported in the literature so far.

Method used

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  • Preparation method of short hole SBA-15 mesopore silicon base material
  • Preparation method of short hole SBA-15 mesopore silicon base material
  • Preparation method of short hole SBA-15 mesopore silicon base material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] At room temperature, dissolve 2.4g of template agent P123 into 84ml (1.20M) of hydrochloric acid aqueous solution, stir with a magnetic stirrer to obtain a transparent liquid, then add 14.0g of decane and continue stirring at this temperature for 1h to obtain a white mixture. 0.0276g of NH 4 After adding F into the mixed solution to dissolve, add 5.5ml of TEOS and stir for 5-10min, then raise the temperature to 313K. Stirring was continued at this temperature for 20-24h to obtain a milky white solution.

[0024] (b) The milky white solution obtained in (a) was transferred into a stainless steel kettle, sealed and crystallized at 473K for 48 hours. After cooling, filtering, and natural air drying, the templating agent is removed by calcination at 773K for 5 hours, and the short-pore SBA-15 mesoporous silicon-based material can be obtained.

[0025] The scanned and high-resolution scanned images of the obtained samples are shown in Figures 1 and 2.

Embodiment 2

[0027] At room temperature, dissolve 2.4 g of template agent P123 into 75 ml (2.0 M) of aqueous hydrochloric acid, stir with a magnetic stirrer to obtain a transparent liquid, then add 15.6 g of undecane and continue stirring at this temperature for 2 h to obtain a White mixed solution. 0.0276g of NH 4 After F was dissolved in the mixed solution, 5.5ml of TEOS was added and stirred for 10 minutes, then the temperature was raised to 308K, and stirring was continued at this temperature for 20-24 hours to obtain a milky white solution.

[0028] (b) The milky white solution obtained in (a) was transferred into a stainless steel kettle, sealed and crystallized at 353K for 48 hours. After cooling, filtering, and natural air drying, the templating agent is removed by calcination at 773K for 5 hours, and the short-pore SBA-15 mesoporous silicon-based material can be obtained.

Embodiment 3

[0030] At room temperature, dissolve 2.4 g of template agent P123 into 84 ml (1.70 M) of hydrochloric acid aqueous solution, stir with a magnetic stirrer to obtain a transparent liquid, then add 17.0 g of dodecane and continue stirring at this temperature for 1 h to obtain a White mixed solution. 0.0276g of NH 4 After adding F into the mixed solution to dissolve, add 5.5ml of TEOS and stir for 5-10min, then raise the temperature to 313K. Stirring was continued at this temperature for 20-24h to obtain a milky white solution.

[0031] (b) The milky white solution obtained in (a) was transferred into a stainless steel kettle, sealed and crystallized at 373K for 48 hours. After cooling, filtering, and natural air drying, the templating agent is removed by calcination at 773K for 5 hours, and the short-pore SBA-15 mesoporous silicon-based material can be obtained.

[0032] The scanning and high-resolution scanning electron microscope images of the obtained samples are shown in F...

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Abstract

A process for preparing the short-artery mesoporous Si-base material SBA-15 features that a lot of organic cosolvent is introduced to traditional system for synthesizing SBA-15 to create a lot of gaps in the system and under the catalytic action of F, the TEOS is quickly hydrolyzed.

Description

technical field [0001] The present invention relates to the preparation of short-pore SBA-15 mesoporous materials, specifically a method of adding a large amount of organic co-solvent, using the force of the co-solvent and micelles to inhibit the growth in the channel direction, and then obtain short Pore ​​SBA-15 mesoporous silicon-based material. Background technique [0002] Mesoporous silicon-based materials MCM-41 and SBA-15 have been widely studied in catalysis, separation, adsorption, and assembly of semiconductors due to their highly ordered pore structure and high specific surface area. The regulation of the morphology, pore size and particle size of mesoporous materials has become a hot spot in recent years. Organic co-solvents, such as TMB (1,3,5-trimethylbenzene), alkanes, and amines, have been used for pore size tuning. For example, decane has good pore-expanding properties in the synthesis of MCM-41, but the resulting materials often lose their high degree of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/04
Inventor 包信和张贺孙军明缪少军谭大力
Owner JINKAI INSTR DALIAN CO LTD