Catalytic CO2Hydrogenation to Feedstock Chemicals for Jet Fuel Synthesis Using Multi-Walled Carbon Nanotubes as Support

Hydrogenation of CO2 to hydrocarbons is investigated over a K/Mn/Fe catalyst dispersed over multi-walled carbon nanotubes (MWCNT). Higher conversion yields were observed, but the catalyst favors methane formation and yields a lower olefin/paraffin ratio than an analogue catalyst dispersed on alumina reported previously. Both phenomena are ascribed to differences in the catalyst’s active phase and particle size, leading to a shift in concentrations of carbonaceous surface intermediates.