Self-heating reforming hydrogen production catalyst and preparation method thereof

Abstract

The invention provides an autothermal reforming hydrogenation catalyst and a preparation method thereof. The catalyst takes one or more than one of platinum precious metal Pt, Pd, Ru, Rh and Ir as a main catalytic active component, and takes one or more than one of alkali metal and / or alkaline earth metal oxide Na2O, K2O, MgO, CaO, SrO and BaO, as well as a CeO2-based binary or ternary rare earth compound as a catalytic promoter. The catalyst can be applied in the form of a granular catalyst, and the entire catalytic active components and the catalytic promoter can also be borne on monolithic carriers such as honeycomb ceramics, metallic honeycomb, metal foam and so on, to produce a monolithic catalyst. The catalyst provided by certain embodiments has the advantages of high activity, low CO content in product gas, impact resistance, and long service life; and the quality of the catalyst can be further improved through the preparation method and a use method after the improvement, for example, a CeO2-based compound oxide is produced into a single-phase sosoloid, the catalyst is reduced before the use, etc.

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof, in particular to an autothermal reforming hydrogen production catalyst and a preparation method thereof. Background technique [0002] As an efficient and clean energy carrier, hydrogen is considered to be the most ideal fuel for fuel cells. Under the circumstances of the current hydrogen storage and transportation costs are too high and the infrastructure is not complete, it will be better to use fossil raw materials to reform hydrogen on site to provide hydrogen sources for fuel cell distributed power plants, household combined heat and power systems, and micro power systems. scheme. Among them, natural gas with methane as the main component has attracted much attention due to its high H / C ratio, non-toxicity, and complete infrastructure such as gas transmission pipelines. [0003] The production of hydrogen from methane / natural gas through the reforming reaction is through the p...

AI Technical Summary

Problems solved by technology

The performance of the above-mentioned catalysts still needs to be improved when used in distributed fuel cell hydrogen source systems: a) The activity and stability of the catalysts are still insufficient; b) The impact resistance of the catalysts under harsh operating conditions such as repeated startups and shutdowns has yet to be verified and increase; c) The CO content in the reformed gas needs to be further reduced

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