Method for preparing mesoporous silica molecular sieve fiber

A mesoporous silica and molecular sieve technology, applied in chemical instruments and methods, molecular sieves and alkali exchange compounds, inorganic chemistry, etc., can solve the problems of difficult control of the diameter and length of silica molecular sieve fibers, harsh reaction conditions, etc. The effect of easy operation, high specific surface area and simple process requirements
CN101387019AInactive Publication Date: 2009-03-18SHANGHAI INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI INST OF TECH
Publication Date
2009-03-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a method for preparing a wide aperture mesoporous silica molecular sieve fiber. An industrialized nonionics or cationic surfactant is adopted as a template. An organic or inorganic silicon source is adopted as a precursor. In the state where various auxiliary reagents, such as inorganic salt, alcohol and the like, are added, the fiber is synthesized through the cooperative assembly between a surface active agent and inorganic species and a hydrothermal treatment process. The mesoporous silica molecular sieve fiber is between 3 and 20 nm in aperture, between 0.3 and 2.5 cm^3 / g in pore volume, and between 600 and 1200 cm^2 / g in specific area. The material is easy to obtain, the technical requirements are comparatively simple, and the operation is feasible. The method has a very wide application range in terms of the preparation of composite fortifying fiber and semiconductor porous nanometer tube and nanometer wire in the fields of nanometer microelectrode and aviation material.
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Description

Technical field

[0001] The present invention relates to an inorganic nanopore material, and more specifically to a method using a polymer block copolymer nonionic surfactant or a cationic surfactant as a template agent in an acidic medium through inorganic salts and organic alcohols. A method of synthesizing large pore size mesoporous silica molecular sieve fibers under hydrothermal conditions. Background technique

[0002] Since the US Mobil Company synthesized the mesoporous molecular sieve M41S with high specific surface area, large pore volume and pore diameter in 1992, people have conducted extensive research on its applications in catalysis, adsorption, separation and nanodevices. Crystalline silica and fibrous silica mesoporous molecular sieves with special shapes such as spheres, flakes, and regular appearances have attracted special attention. Studies have shown that fibrous silica mesoporous molecular sieves have very important applications in microlaser devices, ...

Claims

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