Chemical Valorization of CO2

A critical review of technologies, costs, and projects for production of carbon-neutral liquid e-fuels from hydrogen and captured CO2

“…9, producing a kg of methanol requires an estimated 0.20 kg H 2 and 1.66 kg CO 2 78 with BaCe 0.2 Zr 0.6 Y 0.16 Zn 0.04 O 3 and Cu/Zn/Al as the catalysts for the RWGS reaction and the methanol synthesis, respectively. Few other studies 82–84 mention the net CO 2 utilization for e-methanol synthesis as 1.4t CO 2 per 1t of e-methanol (or equivalently, a kg of methanol requires 1.4 kg of CO 2 ), which is close to the other two numbers (1.373 kg CO 2 80,81 and 1.66 kg CO 2 78 ).…”

“…14, producing a kg of SAF requires an estimated ∼1.36 kg H 2 and 14.55 kg CO 2 , 99 with Co- and Fe-based catalysts for the FT synthesis and BaCe 0.2 Zr 0.6 Y 0.16 Zn 0.04 O 3 as the catalyst for the RWGS reaction. Few other studies 82,83,101 mention the net CO 2 utilization in the FT process as 2.6 t CO 2 per 1t of liquid FT fuel (or equivalently, a kg of FT fuel requires 2.6 kg of CO 2 ), but these estimates are for the traditional FT fuel ( versus the synthetic FT fuel) that is produced using CO 2 and methane reforming. 101…”