Method for preparing mesoporous carbon supported metal nanoparticle catalyst

Abstract

The invention provides a preparation method of a mesoporous carbon supported metal nanoparticle catalyst. According to the method, the mesoporous carbon supported metal nanoparticle catalyst can be synthesized through two steps of hydrothermal treatment and carbonization. Specifically, in the hydrothermal process, a surfactant, an additive, a metal salt precursor (one, two or three of Pd, Au, Pt, Ag, Ru, Rh, Ir, Ni, Co, Zn and Cu) and a polymer precursor are dispersed in a water phase to prepare a uniform solution, and the solution is further heated to form a composite material of a mesoporous polymer supported metal precursor; in the carbonization process, the composite material of the polymersupported metal precursor is converted into the mesoporous carbon supported metal nanoparticle catalyst by adjusting the carbonization temperature, the protective atmosphere and the like. According to the method, the high-dispersion supported catalyst with uniform metal particle size can be obtained, the preparation process is simple and convenient, is easy to amplify, has universality, and the obtained catalyst has wide application prospects in the fields of catalytic hydrogenation, oxidation, electrochemistry and the like.

Description

technical field [0001] The invention relates to a mesoporous carbon-supported metal nanoparticle catalyst. A highly dispersed and supported catalyst with uniform metal particle size is constructed through two steps of hydrothermal and carbonization. The obtained catalyst has a wide range of applications in catalytic hydrogenation, oxidation, electrochemistry and other fields. application prospects. Background technique [0002] Most of the reactions in modern industry involve heterogeneous catalytic processes. Supported metal catalysts are an important class of heterogeneous catalysts, which are widely used in petrochemical, biomedicine, aerospace and other fields. In recent years, the application of metal catalysts in the fields of biomass conversion and electrocatalysis has also developed rapidly. [0003] Generally, metal nanoparticles with a metal particle size of 3-5nm and uniform composition will show better catalytic performance, but because the smaller the size of t...

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Problems solved by technology

[0005] In order to solve the above-mentioned problems such as the control of the size of the metal nanoparticles and the loss of the catalyst during the catalytic reaction process, the present invention provides a method for preparing a highly dispersed metal catalyst. The two-step process constructs mesoporous carbon-supported metal nanoparticle catalysts. By introducing metal salt precursors during the synthesis process, the carrier pore structure can be used to confine the growth of metal nanoparticles, which can effectively control the size of metal nanoparticles and protect the metal nanoparticles. Prevent its loss during the reaction

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