Fig. 2: Catalytic performance of CO2 conversion.
From: Upgrading CO2 to sustainable aromatics via perovskite-mediated tandem catalysis
a The selectivity in hydrocarbons, CO2 conversion, CO selectivity of pristine oxide catalysts (left panel: Fe2O3, ZnFe2O4, and LaFeO3), solely H-ZSM-5 (67) zeolite, and composite tandem catalytic systems (right panel: Fe2O3/H-ZSM-5 (67), ZnFe2O4/H-ZSM-5 (67), and LaFeO3/H-ZSM-5 (67)) The mass ratio of oxide to H-ZSM-5 is 2:1. b Catalytic evaluation of LaFeO3/H-ZSM-5 (67) with different mass ratios. c Catalytic performance over LaFeO3/H-ZSM-5 with different Si/Al ratio. d Catalytic performance comparison between LaFeO3/H-ZSM-5 (red star) and reported non-Fe (pink cycle) and Fe (blue cycle) oxide catalysts, regarding aromatics selectivity in hydrocarbons and CO2 conversion. The black dashed line is a guide for the eye. The data shown in (a–d) was obtained under 3.0 MPa (H2:CO2 = 3:1) with a space velocity of 1000 ml h−1 gcat−1 at 350 °C. e Catalytic stability evaluation of LaFeO3 + H-ZSM-5 (14) catalyst with a more rigorous reaction condition with a space velocity of 6000 ml h−1 gcat−1 at 350 °C, 3.0 MPa, and CO2/H2 = 1:6.
