Fig. 4: Mechanistic study. | Nature Communications

Fig. 4: Mechanistic study.

From: High-entropy intermetallics on ceria as efficient catalysts for the oxidative dehydrogenation of propane using CO2

Fig. 4

Arrhenius-type plots for a C3H8 and b CO2 conversion rates obtained in CO2–ODP on HEI/CeO2. c He- and d CO2-TPSR on the coked Pt–Co–In/CeO2 and HEI/CeO2 catalysts (used in CO2-ODP for 50 h). CO evolution was quantified by the mass intensity of m/z = 28, respectively. Changes in C3H8 conversion in the DDP–regeneration cycles over e HEI/CeO2 and f HEI/SiO2. Reaction conditions: DDP; C3H8:He = 5:10 mLmin−1 (2 h), regeneration; CO2:He = 10:10 mLmin−1 (1 h), then H2:He = 5:10 mLmin−1 (0.5 h) at 600 °C.

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