Fig. 3: Detailed hydrocarbon distribution for selected zeolite frameworks in a dual-bed configuration during Fe2O3@KO2/zeolite bifunctional material catalyzed hydrogenation of CO2 process.

a Fe2O3@KO2/ZSM-22. b Fe2O3@KO2/FER. c Fe2O3@KO2/MOR. d Fe2O3@KO2/ZSM-5. Reaction condition: 30 bar, 375 °C, H2/CO2 = 3, and 10,000 mL · g−1 · h−1 at a time on stream of 48 h.