Production of hydrogen by catalyzed decomposing magnesium and its mixture doped with other metals

Abstract

A method for producing hydrogen and carbon with mixture of metal magnesium and other metals as catalyst by catalytic decomposition is carried out by reacting at 0.01-10Pa and 200-1500degree and separating catalyst from products. It can re-used and not contain CO and CO2 impurities.

Description

technical field [0001] The invention relates to a method for producing hydrogen from hydrocarbons by using a catalyst, in particular to a method for producing hydrogen by using a metal catalyst to catalyze and decompose hydrocarbons. Background technique [0002] As an efficient and clean secondary energy source, hydrogen is widely used in aerospace, oil refining, metallurgy and fine organic synthesis industries; in the ammonia synthesis industry, hydrogen is one of the important synthetic raw materials. In recent years, with the rise of fuel cells, the preparation of high-purity hydrogen as fuel for cells has attracted widespread interest. At present, there are many industrial hydrogen production processes, among which natural gas hydrogen production method has become the main hydrogen production method due to the cheap and easy-to-obtain raw materials and relatively simple process flow, including methane steam reforming method, partial oxidation method, and carbon dioxide ...

AI Technical Summary

Problems solved by technology

[0009] However, in these traditional reaction processes, with the decomposition of alkanes, more and more carbon is generated and cannot be removed at any time, but accumulates on the surface of the catalyst, gradually covering the active center of the catalyst, and isolating it from the reactants, causing the catalyst The catalytic activity is greatly reduced, which eventually leads to the deactivation of

Therefore, the life of catalysts in these processes is generally short, generally no more than 10 hours, or even only a few minutes

In addition, since the surface of the generated carbon-supported catalyst is very firm, it is not easy to remove, which brings great trouble to the regeneration and reuse of the catalyst.

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