High Selectivity CO2 Hydrogenation to Liquid Fuel Over NaFeZnMn Catalyst

Direct synthesis of liquid fuel (C(5+ )hydrocarbons) through CO2 hydrogenation has attracted considerable interest. However, it is plagued by high selectivity of C1 by-products (CO and CH4) and low reaction activity. Herein, we report that Na-FeZn catalysts promoted by a combination of metal additives and investigate their synergistic effect in the catalytic CO(2 )hydrogenation reaction. The CO2 conversion is high to 40.6% with the 68.3% C5+ selectivity. The characteristic results reveal the specific surface area has a great influence on the catalytic performance. Furthermore, the synergistic effect of Mn in the catalyst enhances CO2 adsorption while weakening H2 adsorption, thus remarkably promoting the carbon chain growth and limiting the production of C-1 products. This study offers a promising approach to modulating the metal electronic environment and improving carbon efficiency for CO2 hydrogenation reactions. Graphical AbstractWe present a simple NaFeZnMn-S nanocatalyst that can effectively catalyze CO(2 )hydrogenation to C5+ hydrocarbons. The selectivity towards C(5+ )hydrocarbons is as high as 68.3% at 40.6% CO2 conversion. [GRAPHICS] .