The promotional effect of Ni in the presence and absence of Pt, Mo, Fe and Mg were studied over Al2O3-CeO2 catalysts for the oxidative dehydrogenation of methane with carbon oxide. The reaction was conducted in a continuous fixed-bed flow reactor at 500-700 °C, space velocity of 1143 mLg-1h-1 (pure CH4 or 50% CH4 and CO2 mixture) at atmospheric pressure for 10 h time-on-stream. The catalysts were characterized XRD, XRF, H2-TPR, pyridine FTIR, and N2 physisorption techniques. Second promoters were decisive parameters for achieving maximum methane conversion, ethene yield and CO/H2 ratio. Catalysts with metallic promoters were more resistant toward coking
