Tailored Mesostructured Copper/Ceria Catalysts with Enhanced Performance for Preferential Oxidation of CO at Low Temperature

摘要

Hydrogen as the most efficient and cleanest energy source for fuel cell power is produced mainly by reformation of hydrocarbons, followed by the water gas shift reaction. The CO (0.5-2%) present in the hydrogen stream must be selectively removed because CO is highly poisonous to the electro-catalyst in proton-exchange membrane fuel cells (PEMFCs). Preferential oxidation (PROX) of CO in excess H2 is therefore a key reaction for the practical use of H2 in PEMFCs.