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Co₃O₄, CeO₂ and Co₃O₄–CeO₂ mixed oxides with Co/Ce nominal atomic ratio 0.1:5, prepared by co-precipitation method with sodium carbonate, were tested in the oxidation of propene under lean condition and the catalyst stability was checked by performing three consecutive heating–cooling cycles. Characterization of the textural properties were performed by surface area measurement BET, X-ray diffraction (XRD) and scanning electron microscopy (SEM) measurements. Among the Co₃O₄–CeO₂ mixed oxides, Co₃O₄ (30wt%)–CeO₂ (70wt%) gives the best activity attaining full propene conversion at 250°C. This sample is characterized by the presence of Co₃O₄ particles well dispersed and in good contact with ceria according to BET and XRD data and as evidenced by SEM micrographs. Oxygen temperature-programmed desorption (O₂-TPD) and C₃H₆-temperature-programmed reduction (C₃H₆-TPR …