We already need carbon black, graphite, etc. This process makes production have dramatically less carbon emissions with hydrogen as a bonus. Of course we use millions of tons of hydrogen for things like fertilizer. What's not to like?
Carbon black has the average CO2 intensity of almost 4 kgCO2/kgC [1] and its conventional production is so dirty and low-margin, that companies have been walking away from their plants rather than implement EPA-mandated upgrades. [2]
