"Turquoise" Hydrogen

[Meredith Poor + 898]

"Turquoise" Hydrogen is is produced without emitting CO2 - the residual carbon is in solid form.

KIER unveils catalyst innovations for sustainable turquoise hydrogen solutions

https://www.eurekalert.org/news-releases/1066320

C|Zero ("Turquoise" hydrogen plant engineering company)

https://www.czero.energy/

The main problem I have with all this is that much of the methane occurs 'out in the middle of nowhere', and making it into hydrogen 'out in the middle of nowhere' is particularly useless. The hydrogen could power fuel cells for further extraction, but this would most likely be an insignificant fraction of the gas extracted. Making green ammonia would be helpful, but would still involve significant shipping costs.

If nothing else was done with the carbon, it could be landfilled in old coal mines.

[Meredith Poor + 898]

One place where I see this working would be in the UK Midlands. Natural gas would be piped in, converted to hydrogen, then immediately fed to a fuel cell to generate electricity. The left-over carbon would be sequestered in abandoned coal mines. Anywhere that has a natural gas supply and a place to dump the solid carbon would work as well.