Elucidation of metal and support effects during ethanol steam reforming over Ni and Rh based catalysts supported on (CeO2)-ZrO2-La2O3

Hydrogen production via steam reforming of biomass derived oxygenates is a promising environmental alternative to the use fossil fuels. The ethanol reaction investigated over Ni and Rh based catalysts supported on ZrO2-La2O3 CeO2-ZrO2-La2O3 mixed oxides, aiming at elucidation role metal support in mechanism. versus shown be highly active more selective with no methane under all conditions studied. promote efficiently water gas shift reaction, enhancing hydrogen substantially. Time stream studies show that ceria containing supports are stable, whereas gradual deactivation was evident catalysts. TPO analysis spent revealed extremely low amounts graphitic coke deposited On Ni, particularly catalyst, larger peaks corresponding both amorphous were evident, amounting higher production. combined effects make most suitable for Rh/CeO2-ZrO2-La2O3 showing high activity, selectivity stability, minimal CH4 CO resulting highest H2 yield.