Post by
Aimdr on Dec 08, 2021 3:34pm
Turquoise hydrogen
Turquoise hydrogen is usually taken to mean production from methane into hydrogen and elemental carbon: (CH4-->C + 2H2). This produces only about half the hydrogen from the usual route of steam-methane reforming but no carbon dioxide. Particularly interesting where natural gas is abundant and cheap (i.e. in North America). The 800°C for the process would easily be met in a plasma torch and the approach is quite well suited for separation of the carbon solids. Elemental carbon black is extraordinarily stable and resists oxidation to CO or CO2 over centuries even if it's simply thrown away though it's considered a useful soil adjuvant as well having some existing industrial uses.
Comment by
Magicmike67 on Dec 08, 2021 5:54pm
Research on Methane pyrolysis by thermal plasma have been carried out at MINES-ParisTech for more than 25 years. The technology is now mature and a first commercial plant for the co-production of hydrogen and carbon black is today under construction in the US by MONOLITH Materials.