This is probably one of those questions so stupid that those who know what they’re talking about will laugh.
However. CH4. Methane.
I know that it’s possible to strip the C out using a catalyst. However, I have a feeling that it comes out as CO or CO2.
Which, if you were trying to generate energy isn’t so bad, if you get CO you can burn that to get CO2 in a nicely exothermic reaction. And you’ve H2 to burn, run through a fuel cell, whatever.
However, if you were trying to get rid of the CO2, not create it, you’d much rather you got C, say as soot.
So, the question is, is there any way of stripping, reformulating, the CH4 into C plus H2s? So that you’ve solid C which can then be disposed of?