Fig. 1: Catalytic performance and stability of NiFe2O4/Fe2O3 in CO2 hydrogenation to ethanol.

a Catalytic performance and b oxygenated product distribution and STY of EtOH over the prepared catalysts. c Catalytic performance, product distribution, and STY of EtOH over NiFe2O4/Fe2O3 with different WHSV. d Comparison of WHSV and STY of EtOH over NiFe2O4/Fe2O3 with the results reported in other literature. e Stability of NiFe2O4/Fe2O3 in CO2 hydrogenation to EtOH. Reaction conditions: 330 °C, 5.0 MPa, WHSV = 24000 mL·gcat.−1·h−1, H2/CO2/Ar = 72/24/4.