Carbon dioxide capture from air and its subsequent conversion to methanol, a promising alternative fuel, has gained increasing attention as it would result in a carbon neutral cycle. To date, reported systems for this combined process use amines as capturing agents. However, amines are toxic, have significant vapor pressure and stability issues. Herein, we report a novel amine-free capture and conversion system, based on alcoholic NaOH/KOH solutions. The captured CO2 is hydrogenated with high yields to methanol, using homogeneous pincer catalysts, in “one pot”. High capture efficiency, low toxicity and easy availability of NaOH/KOH makes them highly suitable to scrub CO2 from dilute sources like ambient air for subsequent conversion to methanol in a scalable process in the context of the methanol economy.

Novel integrated system for CO2 capture and conversion to methanol using alcoholic NaOH/KOH solutions

2019 Fall National Meeting

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