A kind of preparation method of methanol fuel decomposition catalyst with high stability

Abstract

The application relates to the field of catalyst materials, and specifically discloses a preparation method of a highly stable methanol fuel decomposition catalyst. The following preparation steps are included: S1, adding copper nitrate, magnesium nitrate and aluminum nitrate to deionized water, stirring and mixing with sodium carbonate solution to obtain a matrix liquid; S2, adjusting the pH of the matrix liquid, standing for aging, and removing the lower layer of precipitation and crystallization treatment, heat preservation and roasting to obtain matrix particles; S3, by weight parts, respectively weigh 45-50 parts of solvent, 0.5-1.0 parts of modified graphite particles and 3-5 parts of chloroplatinic acid and stir and mix to obtain a reaction solution ; S4, hydrothermal treatment under argon atmosphere, adjust the pH to 2.5, filter and collect the precipitate, wash, dry, crush and sieve. The application firstly prepares the hydrotalcite substrate, and then composites the graphite surface loaded with reduced platinum simple substance with the hydrotalcite substrate, which improves the activity of the methanol decomposition catalyst in the catalytic decomposition reaction and improves the stability of the catalyst.

Description

technical field [0001] The application relates to the field of catalyst materials, more specifically, it relates to a preparation method of a highly stable methanol fuel decomposition catalyst. Background technique [0002] The chemisorption and decomposition of methanol on a variety of metal surfaces has been extensively studied in recent years because methanol can serve as a new liquid energy carrier and is easily synthesized from biomass, coal, and natural gas, which are ore resources that are more abundant than crude oil, And it has become one of the most promising raw materials because of its low cost, easy operation and high energy. Methanol as a raw material has the following advantages: [0003] ① Methanol decomposition only needs methanol as a raw material, and can use the waste heat of the engine; [0004] ② Liquid methanol is more convenient in long-distance transportation; [0005] ③As long as there is a cost-effective catalyst, it can be converted into CO and...

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Problems solved by technology

[0008] In view of the above-mentioned related technologies, the inventors believe that in the scheme of catalyzing methanol decomposition through catalysts, in the methanol decomposition catalyst, the particles doped in the catalyst will be thermally sintered and lead to agglomeration, so that the activity in the methanol decomposition reaction will drop rapidly, affecting its catalytic performance. activity, reducing the stability of the catalyst

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