Preparation method of catalyst for methane reforming with carbon dioxide to synthetic gas

Abstract

The invention relates to a preparation method of a catalyst for methane reforming with carbon dioxide to synthetic gas. The catalyst comprises an active ingredient, an additive and a carrier. The preparation method is as below: treating a waste residue oil hydrogenation catalyst to prepare a catalyst precursor A; reducing the catalyst precursor A in a reducing atmosphere; adding the reduced catalyst precursor A and a polyol solution into a high pressure reactor, carrying out a hydrogenation reaction, placing a reaction effluent, filtering and dying to obtain a catalyst precursor B; and dissolving an active ingredient precursor and an additive precursor in water to obtain a solution C, then adding the catalyst precursor B, drying and calcining to obtain the catalyst. The method of the present invention not only makes full use of waste residue oil hydrogenation catalyst, saves cost, but also promotes dispersion of more active ingredients on the surface of the carrier. The method improves the utilization of the active metal, and the conversion of methane and selectivity of products.

Description

technical field [0001] The invention relates to a method for preparing a catalyst for producing synthesis gas by reforming methane and carbon dioxide, in particular to a preparation method for a supported nickel-based catalyst for producing synthesis gas by reforming methane and carbon dioxide. Background technique [0002] Methane and carbon dioxide are cheap and resource-rich carbon-containing compounds in nature. Using the reforming reaction of methane and carbon dioxide to produce synthesis gas is of great significance for alleviating the energy crisis and reducing global warming caused by greenhouse gas emissions . The synthesis gas produced by the reforming of methane and carbon dioxide has H 2 The characteristic of / CO≤1 can be applied to Fischer-Tropsch synthesis to produce high value-added chemicals such as higher hydrocarbons. [0003] At present, the catalysts used for the reforming of methane and carbon dioxide to produce synthesis gas are mainly supported meta...

AI Technical Summary

Problems solved by technology

The reaction life of the obtained catalyst is longer, but the preparation process of this method is complicated and the cost is higher

[0007] Although the catalysts prepared by the above-mentioned patented methods have obtained better reaction performance of methane carbon dioxide reforming to synthesis gas, the catalysts all have the problem of high cost, and the reaction of methane carbon dioxide reforming to synthesis gas is still a fast reaction (this kind The rapid reaction is generally carried out under the condition of mass transfer control), and the reaction is completed when the reactant reaches the outer surface of the catalyst, so the inner surface of the catalyst does not contribute much to the target reaction, which results in a lower The metal utilization rate increases the cost of the catalyst, and at the same time accelerates the deep oxidation of the product

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