Formation of carbon nanofibers and carbon nanotubes through methane decomposition over supported cobalt catalysts

The factors that determine the catalytic performance of Co catalysts supported on different supports, such as MgO, Al2O3, SiO2 and TiO2, for the formation of carbon nanofibers through methane decomposition are identified. The results indicate that the catalytic activity and life for the reactions are superior for Co/Al2O3 and Co/MgO.