I’m replying to a commenter who claims that it is thermodynamically impossible to extract energy from fossil fuels while capturing the carbon (ie not releasing CO2 into the environment). Obviously some chemistry needs to happen but I claim it is possible to still get net energy out while somehow capturing the CO2.

See this page: https://longitudinal.blog/co2-series-part-2-co2-removal/ with the bit that starts “Note: Interestingly, this is all much less than the heat of combustion”