A catalyst preparation method for partial oxidation of methane to synthesis gas

Abstract

The invention relates to a method for preparing a catalyst for partial oxidation of methane to produce synthesis gas. The catalyst includes an active component, an auxiliary agent and a carrier. The method for preparing the catalyst comprises: treating a waste residue oil hydrogenation catalyst to prepare a catalyst precursor A; then use a reducing atmosphere to reduce the catalyst precursor A; add the reduced catalyst precursor A and polyol solution to the autoclave for hydrogenation reaction, place the reaction effluent and then filter and dry to obtain the catalyst Precursor B: Dissolving the active component precursor in water to obtain solution C, then adding catalyst precursor B, drying and roasting to obtain the catalyst. The method of the invention not only makes full use of the waste residue oil hydrotreating catalyst, saves costs, but also promotes the dispersion of more active components on the surface of the carrier, which not only improves the utilization rate of active metals, but also improves the conversion rate of methane and the product selectivity.

Description

technical field [0001] The invention relates to a method for preparing a catalyst for producing synthesis gas by partial oxidation of methane, in particular to a preparation method for a supported nickel-based catalyst for producing synthesis gas by partial oxidation of methane. Background technique [0002] More than 90% of the composition of natural gas is methane, and the synthesis of fuel and chemicals from methane through synthesis gas is one of the effective ways to utilize natural gas. Compared with the traditional steam reforming method, the partial oxidation of methane to synthesis gas has the advantages of small reaction vessel volume, fast reaction rate, low energy consumption, and the generated synthesis gas is suitable as raw material gas for methanol and Fischer-Tropsch synthesis. In addition, the development of partial methane oxidation technology may replace the strong endothermic steam methane reforming process for the production of synthesis gas, especially...

AI Technical Summary

Problems solved by technology

[0007] Although the catalysts prepared by the above-mentioned patented methods have obtained good performance in the partial oxidation of methane to synthesis gas reaction, since the reaction is a fast reaction (this fast reaction is generally carried out under the condition of mass transfer control), the reaction The reaction is completed when the material 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 metal utilization rate in the pores of the carrier and accelerates the deep oxidation of the product

Images