Method for synthesizing heteroatom-containing microcavity reactor-type HBMZ zeolite molecular sieve

Abstract

The invention discloses a method for synthesizing a heteroatom-containing microcavity reactor-type HBMZ zeolite molecular sieve. The method comprises the following steps: firstly, uniformly mixing a metal source, a silicon source, an organic template agent, a complexing agent, a mineralizer and water, heating and stirring for a reaction by adopting microwave or ultrasonic, and then subjecting a reaction mixture to hydrothermal crystallization and purification in sequence to obtain raw HBMZ zeolite molecular sieve powder; then, thoroughly mixing the raw HBMZ zeolite molecular sieve powder withan acidic solution for a reaction to obtain an acid-treated product; and finally, subjecting the acid-treated product to high-temperature calcination treatment to obtain the HBMZ zeolite molecular sieve. The heteroatom-containing microcavity reactor-type HBMZ zeolite molecular sieve prepared with the method has unique nest-like microcavity structure characteristics, a highly exposed metal active site and an overhead ultra-thin nanosheet layer facilitate the diffusion of reactant molecules and product molecules and the formation of intermediates during a catalytic reaction process, and an idealreaction site is provided for the catalytic reaction.

Description

technical field [0001] The invention relates to the technical field of inorganic chemical synthesis, in particular to a method for synthesizing a heteroatom-containing micron cavity reactor type HBMZ zeolite molecular sieve. Background technique [0002] With the continuous development of nanotechnology, the concept of nanoreactor was gradually proposed and quickly became a research hotspot in the fields of energy storage, chemical synthesis and biomedicine. Integrating different porous materials with other functional nanomaterials at the nanometer scale, thus obtaining composite porous functional materials with different nanostructures. At present, researchers have constructed some new multifunctional porous materials, such as porous materials with egg yolk-shell structure, porous materials with core-shell structure, porous materials with hollow structure, and three-dimensional assembled porous materials. Hollow microsphere is a kind of porous material with hollow structur...

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Problems solved by technology

Although the zeolite molecular sieve prepared by this method has a multi-level pore structure, the preparation process of the material is cumbersome and the preparation time is as long as 3 to 30 days.

[0006] However, there are still few studies on the direct preparation of micron-cavity reactor-type zeolite molecular sieves with heteroatom-containing bird's nest crystal structure in the next step without a hard template, which limits the application in catalytic reactions.

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