Kinetic model of the partial oxidation of methane to synthesis gas over Ru/TiO2 catalyst

The kinetic behavior of the Ru/TiO2 catalyst in the pal tial oxidation of m ethane to synthesis gas was investigated as a function of temperature and p artial pressures of CH4 and O-2. It was found that the catalyst promotes, t o a large extent the direct formation of CO and H-2 from the reaction of me thane and oxygen while the reforming and water-gas shift reactions are negl igible under these conditions. A kinetic model, based on formation of CO an d H-2 as primary products and of CO2 and H2O as secondary oxidation product s, describes satisfactorily the observed kinetic behavior Values of model p arameters satisfy thermodynamic constraints and agree well with data derive d from surface science techniques and kinetic studies of elementary surface processes that are in the literature.