I like using a steam plasma tube to do Molecular Nuclear Fusion, and create massive free heat. But we can get gas, and burns some, to heat steam and gas to over 370oC. We get the Sabatier reaction, and form methane from CO2 and steam.
But is we have deep coal, a high explosive charge will fracture coal deposits, and let geothermal water turn the coal into CH4, He and O. CH4=methane=natural gas.
So nature makes methane from the deep coal, and it is far easier and cheaper to pipe out natural gas – rather than mine coal.
This is why you wet down coal before you burn it, as you form methane and oxygen at the flame – and get more fusion heat.
Once you have these gases, you can use semi-permeable membranes to separate out the gases.
You pass the methane over 4 titanium honeycomb catalysts, and get light diesel and petrol: you refine them – as today. And you get petrol for 5% of the cost of Fossil Fuels oil.
The coal has fossils of plants and animals in – as they were active life in prehistory. Today plants turn extra CO2 into biomass within 5 minutes: most of the Fossil Fuels formed at the end of the Jurassic, which had 65% more active life than we do today.
So there can be no increase of CO2 in the air – photosynthesis on ;and and seas ensures that. All the Fossil Fuels become active biology again – sucking the CO2 from the air.
Which leaves Global Warming and Climate Change as nuclear fiction, designed to scare the scene stupid: which appears to include university lecturers.
So we can use the uneconomic deep coal, as cheap sources of natural gas. And turn that gas into petrol and diesel. For a century. North Sea Oil was a side show.