Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing transparent meso-porousearth silicon gel monolithi material

A mesoporous silica and gel technology, applied in the field of inorganic porous materials, can solve the problems of unfavorable material industrial production, harsh equipment requirements, complicated operation steps, etc., achieve good thermal stability and transparency, short synthesis cycle, The effect of simple operation steps

Inactive Publication Date: 2010-06-02
TAIYUAN UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods generally have harsh requirements on equipment, high energy consumption, very long time (about 8-12 weeks), or complicated operation steps, which are not conducive to the industrial production of such materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0016] 0.5 g of Pluronic 123 (P123, EO 20 PO 70 EO 20 ) was dissolved in 2.32 gram of ethanol, 0.27 gram of water and 0.1 gram of 1mol / L hydrochloric acid, stirred to dissolve, then added 1.04 gram of TEOS, and continued to stir for about 60 minutes. Move the prepared sol into a container with a certain shape, seal the container with a plastic film with 3 pinholes, let it stand at a constant temperature at 60°C for 42 hours to gel the system, seal the pinholes, and continue to heat at 60°C After standing and aging for 1 day, and then drying in the open at 60°C, a complete transparent mesoporous silica gel monolithic material was obtained after 3 days. Then the temperature was raised to 550° C. at a rate of 2° C. / min and calcined for 6 hours to completely remove the surfactant template to obtain an ordered mesoporous silica monolithic material. By XRD, N 2 Analytical tests such as isothermal adsorption show that the obtained material has a high-quality hexagonal phase struc...

Embodiment approach 2

[0018] 0.5 g of Pluronic 123 (P123, EO 20 PO 70 EO 20 ) was dissolved in 2.32 gram of ethanol, 0.27 gram of water and 0.1 gram of 1mol / L hydrochloric acid, stirred to dissolve, then added 1.04 gram of TEOS, and continued to stir for about 90 minutes. Move the sol into a container with a certain shape, seal the container with a plastic film with 5 pinholes, let it stand at a constant temperature of 80°C for 20 hours to gel, seal the pinholes, and then cool down to 60°C to continue After standing and aging for 1 day, and then drying in the open at 60°C, a complete transparent mesoporous silica gel monolithic material was obtained after 3 days. Then, the temperature was raised to 550° C. at a rate of 2° C. / min and baked for 6 hours to completely remove the surfactant template. Others were the same as Embodiment 1.

Embodiment approach 3

[0020] 1.156 g of F127 (EO 106 PO 70 EO 106 ) was dissolved in 2.32 gram of ethanol, 0.27 gram of water and 0.1 gram of 1mol / L hydrochloric acid, stirred to dissolve, then added 1.04 gram of TEOS, and continued to stir for about 120 minutes. Move the prepared sol into a container with a certain shape, seal the container with a plastic film with 4 pinholes, and let it stand at a constant temperature of 55°C for 48 hours to gel the system, seal the pinholes, and continue to heat at 55°C After aging for 2 days, and then drying in the open at 55°C, a complete transparent mesoporous silica gel monolithic material was obtained after 3 days. Then the temperature was raised to 550° C. at a rate of 2° C. / min and calcined for 6 hours to completely remove the surfactant template to obtain an ordered mesoporous silica monolithic material. By XRD, N 2 Analytical tests such as isothermal adsorption show that the obtained material has a high-quality hexagonal phase structure, and its spe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method for a transparent mesoporous silicon dioxide gel monolith material which pertains to the technical field of inorganic porous material, in particular to anordered mesoporous silicon dioxide gel monolith material with large size, no crackle and optical transparent and the technical proposal of the simple, highly efficient, rapid and convenient preparation method. The method is characterized in that direct conversion of sol, gel, aging and drying can be realized at high temperature by adjusting synthesis ratio without any special protective means orcomplicated operation procedures. The method has short synthesis period and simple operation steps and is easy to control. The material produced by the method has an ordered hexagonal phase mesoporousstructure with 2nm to 10nm of aperture, 0.2cm<3> / g to 0.8cm<3> / g of pore volume, 450m<2> / g to 850m<2> / g of specific area and more than 2.2nm of wall thickness, and the wall thickness of the structureis larger than the aperture, thereby having wide application value in the research aspect of novel optical units, electrical units and magnetic units.

Description

technical field [0001] The preparation method of a transparent mesoporous silica gel monolithic material of the present invention belongs to the technical field of inorganic porous materials, and specifically relates to a large-sized, crack-free, transparent mesoporous silica gel monolithic material and its simple and rapid and efficient preparation methods. Background technique [0002] Mesoporous silica is a new type of porous material synthesized by using surfactant as a template, because of its large specific surface area, high pore volume, regular and diverse pore structure and its pore distribution in a wide range It has shown broad application prospects in the fields of adsorption, separation and catalysis. More importantly, the ordered organization and periodic arrangement of this mesoporous structure at the molecular level is also the basis for the heterogeneous recombination of nanoscale guest molecules such as dye molecules, photosensitive molecules, semiconducto...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/157C01B33/18
Inventor 王晓钟吕晓梅谢克昌
Owner TAIYUAN UNIV OF TECH