Preparation method of methane reforming reaction catalyst

Abstract

The invention belongs to the technical field of a catalyst, and particularly relates to a preparation method of a methane reforming reaction catalyst. The method comprises the following steps of (1) performing raw material mixing to obtain a mixed reagent; (2) uniformly mixing the mixed reagent obtained in the step (1) with expanded perlite; performing ball milling for 30 to 50h at the temperatureof 60 to 90 DEG C to obtain black slurry; (3) performing sublimation drying and crushing on the black slurry obtained in the step (2) at low temperature and low pressure; then, introducing ammonia gas at the temperature being 700 to 900 DEG C; performing roasting for 4 to 8h; performing cooling to obtain light-weight solid materials; (4) dissolving light-weight solid materials obtained in the step (3) into water being 2 to 6 times of the mass of the light-weight solid materials; then, using an ultraviolet light source for radiation treatment; performing drying; obtaining a finished product. The catalyst prepared by the method has the advantages that the reaction temperature of the methane and carbon dioxide is reduced; in addition, the surface active sites and the pore structures of the catalyst are stable, so that the service life of the catalyst is long.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a preparation method of a methane reforming reaction catalyst. Background technique [0002] my country's natural gas reserves are quite abundant, and the main component is methane. Converting methane into chemicals and liquid fuels with high added value is an important way to efficiently utilize natural gas resources. In addition, with the improvement of the degree of industrialization, the emission of carbon dioxide is increasing day by day. Therefore, the research on methane carbon dioxide reforming reaction that comprehensively utilizes methane and carbon dioxide is of great significance to alleviate the energy crisis and reduce carbon dioxide emissions. The current carbon dioxide reforming catalysts of methane will have problems such as deactivation, carbon deposition and loss of active components after long-term reaction. It is very important to improve the a...

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Problems solved by technology

The invention uses lignite activated carbon as a carrier, and after modification by high-temperature and high-pressure ammonia water, basic functional groups are added, which is beneficial to absorb more carbon dioxide, thereby increasing the conversion rate of the reforming reaction, and the active components are evenly dispersed, which improves the catalytic activity and resistance. Carbon deposition performance; however, in this invention, the high-temperature reaction at 950°C is easy to consume the surface functional groups in the carrier, and the excessively high temperature will cause the internal pores of the activated carbon to collapse, covering the catalytic active sites, and affecting the catalytic life of the catalyst

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