Catalytic conversion of CO₂ into high value-added hydrocarbons over tandem catalyst

The conversion of CO₂, an abundant carbon resource, into high value-added chemicals or liquid fuels is an attractive way to mitigate carbon emissions, which is also a sustainable approach for the cyclic utilization of carbon resources. However, the selective activation and controllable conversion of CO₂ is challenging because of the inertness of CO₂ and high C–C coupling barrier. In recent years, some obvious breakthroughs on CO₂ hydrogenation to high value-added chemicals or liquid fuels have been made by construction of a tandem catalytic system. For the tandem catalysis, the matching of Fe-based catalyst or metal oxides and zeolites, the assembly between the two active sites, the pore structure and acidity of the zeolites, as well as the reaction conditions and atmosphere all have important effects on the product distribution. Herein, the critical factors affecting the CO₂ activation and conversion and the formation of the target products, as well as the stability over the tandem catalysts are summarized. Finally, an outlook is provided.