[JoeFromSidney]

This sound very much like the Sabatier reaction for producing methane from CO2 and hydrogen, except that this process uses an electrochemical cell, whereas the Sabatier reaction involves high temperature and pressure.

It was at one time used to produce gas for lighting and heating.

It has also been proposed as a means of manufacturing rocket fuel on Mars, using hydrogen brought from Earth or, if water can be found on Mars, using that as a source of hydrogen.

In any case, the reaction consumes more energy than can be obtained from the resulting hydrocarbons. Entropy wins again.

[musicman]

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