Fig. 3: Catalysis mechanism studies.
From: Suppressing COx in oxidative dehydrogenation of propane with dual-atom catalysts
a Schematic diagram of MvK and L-H mechanisms. b, c H216O and H218O response signals of reactions of 18O2–C3H8 mixture on Ni1-TiO2, Fe1-TiO2, and Ni1Fe1-TiO2 followed by He purge at 520 °C (10% C3H8/Ar, 10 mL/min and 10% O182/Ar, 10 mL/min). d, e EPR spectra of spent Ni1-TiO2, Fe1-TiO2, and Ni1Fe1-TiO2 catalysts without and with pretreatment with 10% C3H8/Ar at 520 °C for 2 h.
