Under high temperature and pressure conditions, with expensive catalysts (I’ve had a grant to work on one of these processes a couple of years ago). It is completely uneconomical unless most government tax emissions very heavily one way or another.

Besides, this does not solve the capture bit, which is also a significant challenge, in similar ways (we have ideas about technologies, thermodynamics do not work in our favour, it would still require radical policies for it to work).

Nobody is going to wave their magic wand and make fossil fuels illegal anytime soon. It is a common techno-euphoria trap: technology is the easy bit, and we’re not there yet on that front. Policy is the struggle after that, and it is much more difficult.