Preparation method of MOF derived different-structure nanoreactor

Abstract

The invention relates to a preparation method of an MOF derived different-structure nanoreactor, the preparation method comprises the following steps: dissolving an aluminum salt, an organic ligand and a structure regulator in a mixed solution of ethanol and acetone, adding water and an acid medium, and uniformly stirring to obtain a mixture; reacting the mixture, dispersing the mixture in a mixed alkaline solution of ethanol containing cetyltrimethylammonium bromide and water to obtain an aluminum-based MOFs material solution, adding an ethanol solution containing tetraethoxysilane, adding the mixture into a hydrothermal solvent, and performing hydrothermal reaction to obtain nanoreactor precursors of different structure types; calcining and then loading an active catalytic component on the reactor carrier to obtain the nano-reactor catalytic material. The obtained catalytic active nanoparticles can be highly dispersed in the whole reactor, the mesoporous SiO2 shell layer greatly increases the specific surface area of the catalyst, the pore capacity of the catalyst is improved, the catalyst has good adsorption and enrichment effects on reactant molecules, the preparation process is simple, and the synthesis condition is mild.

Description

Technical field [0001] The present invention relates to a nano-reactor material, and more particularly to a method of preparing a MOF-derived different structural nano-reactor. Background technique [0002] The catalyst acts as a core element that affects the catalytic reaction is a critical role in the reaction. The study of the innovation and development of catalysts in the catalytic field has not stopped. Generally, the preparation process and physicochemical properties of high performance nanocatalytic materials are more complicated than those of those common performance nanocatalytic materials. Therefore, it is necessary to think deeply on the design and synthesis of different structural nanocatalysts. In particular, the composition, production, activity, selective, stability, surface properties, porosity, size, morphology, density, and preparation cost require the system. The nano-reactor catalyst is an important branch of the nanocatalyst refers to a catalyst assembled in ...

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Problems solved by technology

[0004] However, when synthesizing the above materials, there are many types of reagents required, and the synthesis steps are complicated; in the catalytic reaction, the pores of the shell structure are easily blocked, which makes the catalytic reaction efficiency low, and the active catalytic center has poor dispersion in the core, especially at high temperature. During the high-pressure catalytic reaction, the particles are easy to aggregate, which affects the catalytic activity of the catalytic material

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