The steam reforming of natural gas is a promising process for the production of hydrogen, which can be used for feeding polymer electrolyte membrane fuel cells (PEMFC) [1].The present work deals with the use of Ru/Al2O3 catalyst deposited on different structured supports (monoliths and foams), to evaluate the most promising performance in terms of methane conversion and hydrogen yield.The effects linked with the nature of supports, their composition and the noble metal loading have been evaluated.For this purpose, all experiments being performed on a specific pilot plant.A plug flow stainless steal reactor with one meter long tube was used to host structured catalyst.The thermal power for steam reforming reaction is given by an electrical oven surrounding the reactor.