Preparation method and application of mesoporous silica material

A technology of mesoporous silica and bisdecyl dimethyl ammonium chloride, applied in chemical instruments and methods, alkali metal oxides/hydroxides, silicon compounds, etc. The process is complicated, the process is complex and other problems, to achieve the effect of obvious effect, simple process, and prolong the volatilization time
CN111420646APending Publication Date: 2020-07-17TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date
2020-07-17

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Abstract

The invention discloses a preparation method and application of a mesoporous silica material. The pore diameter of the mesoporous silica material is 4.5 to 8 nm; the specific surface area of the mesoporous silica material is 200-1000 cm<2> / g; and the pore volume of the material is 0.2-2.0 cm<3> / g. The material with high specific surface area and large pore volume can be used as a slow-release agent for flavors and fragrances, and overcomes the defects that the flavors and fragrances are easy to decompose and deteriorate, rapid to volatilize and lose, short in fragrance lasting time, poor in thermal stability and the like in the application process. According to the preparation method, soluble didecyl dimethyl ammonium chloride is used as a template agent, ethyl orthosilicate is used as a silicon source, and a composite product is obtained under an alkaline condition; and the composite product is subjected to filtering, washing, drying and calcining so as to obtain the mesoporous silicawith a controllable structure. The method is short in reaction time and aging time, small in template agent usage, simple and convenient in process, capable of saving energy and reducing consumptionand convenient for large-scale production and application.
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Description

technical field

[0001] The invention relates to a preparation method and application of a mesoporous silica material, belonging to the field of preparation and application of mesoporous materials. Background technique

[0002] Since researchers from moble company used cationic quaternary ammonium salt surfactants as templates to prepare M41S series mesoporous silica materials in 1992, people have devoted a lot of energy to research in this area, with different morphological structures and different properties. The requested research on mesoporous silica came into being. The choice of template agent in the preparation of mesoporous materials has a great influence on the structure of the material. At present, people mainly use different surfactants to regulate the structure of the material. Double-chain alkyl surfactants have different aggregation forms in the solution. , resulting in different mesoporous silica materials, among which Chinese patents ZL200510012316.3 and ZL20...

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
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