Stability improvement of ZrO2-doped MnCeOx catalyst in ethanol oxidation

ZrO2-doped manganese–cerium oxide catalyzed ethanol oxidation effectively and ethanol was fully oxidized to CO2 at 453 K. The catalyst also showed quite promising stability for 120 h on-stream without obvious loss in ethanol conversion. Structural analyses have revealed that ZrO2-doping enhanced the oxygen storage capacity of ceria by generating more oxygen vacancies, and at the same time promoted the thermal stability through the formation of solid solution.

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► Mn0.6Ce0.2Zr0.2Ox has higher thermal stability than Mn0.6Ce0.4Ox.
► ZrO2-doping generates more oxygen vacancies via the formation of solid solution.
► Ethanol is fully oxidized to CO2 at 453 K.
► Ethanol conversion and CO2 selectivity maintained unchanged for 120 h at 463 K.