Method for preparing magnetic SBA-15

A SBA-15, magnetic technology, applied in chemical instruments and methods, molecular sieve compounds, inorganic chemistry, etc., can solve the problems of high synthesis cost of instruments and equipment, and achieve the effect of low production cost, high porosity, and large specific surface area
CN104163433AInactive Publication Date: 2014-11-26CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINESE RES ACAD OF ENVIRONMENTAL SCI
Publication Date
2014-11-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing magnetic SBA-15, which comprises the following steps: 1) dissolving a ferrous compound in water by stirring under dark conditions, adding P123 and TEOS (tetraethyl orthosilicate), and stirring; 2) transferring the reaction product and mother solution into polytetrafluoroethylene to carry out hydrothermal crystallization; and 3) cooling, filtering, drying, and calcining to obtain the end product. In the method, the ferrous chloride water solution is an acidic solution, the P123 can be dissolved more quickly in the acidic solution, and the TEOS can be hydrolyzed under such acidic conditions; and therefore, no additional acid source in the public known technique is needed, so no acidic waste liquid can be generated.
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Description

technical field

[0001] The invention belongs to the technical field of preparation of inorganic non-metallic materials, and in particular relates to a green and environment-friendly method for preparing magnetic SBA-15. Background technique

[0002] Mesoporous molecular sieves have become a hot research field since the first report of MCM-41 mesoporous silica material by scientists from Mobil Oil Company in the United States in 1992. In the past 20 years, both in the synthesis of new mesoporous molecular sieves, in the study of their formation mechanism, and in the application of mesoporous molecular sieves, rapid development has been achieved. In particular, the discovery of new mesoporous molecular sieves of the SBA series has further expanded the types and structures of mesoporous materials.

[0003] SBA-15 mesoporous molecular sieve is often used in catalysis, adsorption, separation and host-guest due to its regular pore structure, adjustable pore size, high specific su...

Claims

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