I have looked into it.
https://www.sciencedirect.com/topics/engineering/synthetic-fuel-production
https://www.google.com/amp/s/theconversation.com/amp/lets-chemically-rebuild-fossil-fuels-to-create-sustainable-energy-63642
https://www.princeton.edu/news/2012/11/27/synthetic-fuels-could-eliminate-entire-us-need-crude-oil-create-new-economy
Almost no article concerning synthetic fuels are interested in synthetic coal because it is not viable. Apparently, we’re much more interested in liquid forms of fuel, including the conversion of coal to cheap liquid fuel.
I’m not ruling out all synfuel but the notion that we must pursue or consider synthetic coal is just not viable or realistic on any kind of term.
One ton of coal can produce 2,500 kilowatt hours of energy. It would require significantly more than 2,500 kilowatts of energy to artificially produce the pressure and heat needed to generate coal.
Saying it would be cheaper to produce synthetic coal in the desert is about as ludicrous as saying it would be cheaper to produce synthetic snow in space. The conditions are not the problem but the energy required is.
Further, we do not have hundreds of years worth of coal. We have less than two hundred years at our current conception. Coal can last longer if we reduce our overall reliant on it, but then you’d be supporting reduction in carbon emotions, not against it.
https://infinity-renewables.com/162-2/
Again, the problem with solar and wind batteries are not the cost but the same environmental impact of mining coal. Though instead of coal, we’re mining lithium. Arguably, lithium can be reusable, recyclable but we’re the options to do so are now severely limited with our current economic viable. That is why solar and wind batteries are not cost effective. That is fixable.
https://www.solarreviews.com/blog/are-lithium-ion-the-best-solar-batteries-for-energy-storage
https://ensia.com/features/battery-innovations-renewable-energy/
https://www.google.com/amp/s/www.euronews.com/green/amp/2022/07/21/the-race-for-renewable-batteries-whats-the-future-of-solar-and-wind-storage