Skip to main content
. 2023 Mar 17;10(15):2300122. doi: 10.1002/advs.202300122

Figure 3.

Figure 3

a) Effect of temperature on CH4 yield rate over Ir‐CoO, Ir/Al2O3, CoO/Al2O3, Ir‐CoO/Al2O3 and Ir/CoO/Al2O3 catalysts. b) Product selectivity and CO2 conversion of 0.16%Ir‐CoO/Al2O3 catalyst under light irradiation at different temperatures. c) Comparison of the CH4 production rate of our work with those of representative previous studies (numbers in the figure are their corresponding reference numbers). d) Production rate of CH4, CO and CH3OH of 0.16% Ir‐CoO/Al2O3 catalyst under different conditions. e) CH4 yield rate over 0.16% Ir‐CoO/Al2O3 catalyst under various irradiation conditions with constant light intensity. f) CH4 yield rate and selectivity of 0.16% Ir‐CoO/Al2O3 catalyst during long‐time reaction at 250 °C under light irradiation. Reaction conditions: 100–250 °C, 0.1 MPa, 2 W cm⁻2 in light intensity, GHSV = 24000 cm3 h⁻1 gcat⁻ 1, and H2:CO2 = 4:1.