| Catalytic combustion and conversion of methane (CH4) and Syngas (in our case, a gas mixture of H2, CO, CO2 and CH 4) is characterized by the complex transport of reacting gases and the chemical reactions on the catalyst surface and in the gas phase. The initiation and the kinetics of reactions on the catalyst surface depend largely on the surface coverage of species. Since the catalyst allows combustion at a low temperature resulting in a lower thermal NO formation, a detailed investigation on the effects of species surface coverage on catalytic combustion becomes an area of concerned research.;In this work, we investigate the dependence of catalytic combustion of two fuel-air mixtures, namely: methane-air and methane + hydrogen-air mixture, based on their surface coverage on Platinum, using a detailed surface reaction mechanism model. We look into the changes brought about in the kinetics and thus on combustion, when different species interact with the platinum surface, individually and in the presence of one another. We further extend our numerical investigation, to understand the kinetics involved in the catalytic combustion of Syngas on platinum. Syngas today can now be made by the gasification of coal and from other fuel sources using detailed technologies, such that the efficient and low energy harnessing of the thermal properties of Syngas is an important area of research. Catalytic combustion of syngas would meet exactly these goals. Hence the study of a low energy reaction pathway of combustion of syngas on the surface of any catalyst in general has now become an important area of research. Catalytic reactor has been constructed to provide experimental data for comparison with model. Experimentally the ignition process is monitored by thermocouples and mass spectroscopy.;Parameters such as equivalence ratio, temperature and the surface site density of the catalyst surface were varied in the computational works to bring out their influence on the kinetics of combustion. |
