How is Methane Produced from Hydrogen?

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Methane can be produced from hydrogen through a chemical reaction involving carbon monoxide (CO) and water (H2O) in a process known as the water gas shift reaction. This reaction can be followed by the Fischer-Tropsch synthesis, which combines hydrogen and carbon monoxide to form hydrocarbons, including methane. Catalysts are essential for these reactions, although specific catalysts were not detailed in the discussion. The conversation also touched on the potential confusion between producing methane from hydrogen versus the reverse process. Understanding these chemical processes is crucial for anyone interested in methane production from hydrogen.
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Puting aside politics and energy considerations, what is the chemistry of producing Methane from Hydrogen? What catalyst or special equipment would be needed? Thanks
 
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Are you sure you want to produce methane from hydrogen, and not the opposite?!
 
Check making gasoline from coal (gasification), while that's not exactly the same, similar methods apply.
 
One could take hydrogen and CO2 and react it in the following manner (search "water gas shift"):

CO + H2O <---> CO2 + H2

and combine it in the following sequence (search "Fischer-Tropsch"):

(2n+1)H2 + nCO → CnH(2n+2) + nH2O
 
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