A kind of layered ordered ultramicroporous material and its synthesis method

Abstract

The invention belongs to the field of inorganic porous materials, and discloses a layered ordered ultramicroporous material and a synthesis method thereof. The method includes: dissolving the composite template agent in deionized water at a certain temperature, adding an inorganic base to adjust the pH, adding the silicon source dropwise under stirring conditions, and then moving it into a hydrothermal reaction kettle, and standing at a certain temperature Crystallize for a period of time, wash, filter, and dry to obtain layered and ordered ultra-microporous silica molecular sieves. The composite template agent is a mixture of cetyltrimethylammonium bromide and dehydroabietylamine. The synthesis method disclosed in the invention realizes the synthesis of layered ordered ultra-microporous silicon dioxide. In addition, the raw materials used in the synthesis process are natural, non-toxic, renewable resources, and low in cost, and the synthesis method is simple in process, mild in conditions and easy to control, and the prepared layered ordered ultra-microporous silica has a highly ordered pore structure. The pore size is about 2.0nm, and can be widely used in the fields of adsorbents, catalysts, drug controlled release and the like.

Description

technical field [0001] The invention belongs to the field of inorganic porous materials, in particular to a layered ordered ultramicroporous material and a synthesis method thereof. Background technique [0002] At present, ordered ultra-microporous materials (1.2-2.7nm) with pore diameters between micropores and mesoporous critical areas have become ideal materials in the fields of chemical industry, medicine, petroleum, etc., effectively solving the problem of microporous materials with small pore diameters (< 1.2nm) will affect the mass transfer of macromolecular substrates, while mesoporous materials with too large pore size (2.7nm~12nm) are difficult to show the technical problem of shape-selective performance in catalytic reactions. However, due to the lack of suitable templates, the synthesis of ordered ultramicroporous materials is still a major challenge in the field of porous materials research. It is urgent to find suitable templates to guide the synthesis of o...

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