Preparation method of nanoscale carbon-loaded metallic copper catalyst

Abstract

The invention relates to a preparation method of a nanoscale carbon-loaded metallic copper catalyst. The nanoscale carbon-loaded metallic copper catalyst is prepared by the steps of: based on potato starch and copper nitrate as raw materials, preparing solution by a sol-gel process, carrying out ultrasonic dispersion and microwave heating decomposition, grinding and screening. The obtained catalyst can be used for synthesizing methyl-carbonate by oxidation and carbonylation of methanol. In the catalyst, metallic copper is uniformly dispersed and mixed with raw material gas to realize rapid reaction; and the catalyst has good stability and anti-caking property. The preparation method is short in process flow, easy to operate, rich in material sources, reasonable in matching, and full and accurate in data, and is a fully ideal preparation method of the catalyst for synthesizing methyl-carbonate by oxidation and carbonylation of methanol.

Description

technical field [0001] The invention relates to a preparation method of a nanoscale carbon-supported metal copper catalyst, which belongs to the technical field of preparation and application of a catalyst for oxidative carbonylation of methanol to synthesize dimethyl carbonate. Background technique [0002] Activated carbon has excellent properties such as low impurity ash content, high mechanical strength, easy control of pore size distribution, large specific surface area, and good adsorption performance. It has been applied in many fields. In chemical production, metals and metal oxides supported by activated carbon are An important catalyst is also a research direction in the field of catalysis; dimethyl carbonate is a widely used green chemical substance that can be used to synthesize a variety of chemical products. In a variety of dimethyl carbonate synthesis technologies, methanol gas-phase oxidation of carbonyl The chemical method uses methanol, carbon monoxide and ...

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Problems solved by technology

[0002] Activated carbon has excellent properties such as low impurity ash content, high mechanical strength, easy control of pore size distribution, large specific surface area, and good adsorption performance. It has been applied in many fields. In chemical production, metals and metal oxides supported by activated carbon are An important catalyst is also a research direction in the field of catalysis; dimethyl carbonate is a widely used green chemical substance that can be used to synthesize a variety of chemical products. In a variety of dimethyl carbonate synthesis technologies, methanol gas-phase oxidation of carbonyl The chemical method uses methanol, carbon monoxide and oxygen as raw materials, and has low production cost and high product selectivity. 2 , CuO, Cu 2 O and Cu 2 (OH) 3 Cl catalysts are all prepared by conventional impregnation method, the preparation method is relatively backward, and the process is complicated, the preparation time is long, the catalyst performance is not easy to adjust, and the stability is poor, which cannot meet the requirements of industrial use.

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