Macroporous silicon: a next generation catalytic monolith for ethanol steam reforming

D. VEGA; E. LÓPEZ; N. JIMÉNEZ; A. IRIGOYEN; T. TRIFONOV; A. RODRIGUEZ; R. ALCUBILLA; J. LLORCA

Valencia

Conferencia; 7th International Conference “Porous Semiconductors - Science and Technology"; 2010

Macroporous silicon membranes, consisting of straight parallel pores with a diameter of 3.3 µm and depth/width ratio >60, are used as microreactors for high efficiency hydrogen generation via steam reforming of ethanol. The inner walls of the pores were coated with a Co3O4-ZnO catalyst film. The as-prepared reactors were fed with a water-ethanol gas mixture and the effect of the reactor temperature and inlet flow rate on the H2 generation was studied. We observed a superior H2 generation efficiency in comparison with conventional microreactors.