Effect of support on selective CO oxidation on Pt-Cu catalysts

摘要

The polymer electrolytic membrane fuel cell (PEMFC)has been studied during the last twenty years due to its high efficiency for energy generation (1).PEMFC depends on the availability of H2 for proper function.The CO content in the H_2 rich fuel must be reduced to less than 10 ppm to avoid hindering the PEMFC operation.However,the main industrial process for H_2 production,the steam reforming of hydrocarbons,produces a H2 rich gas mixture with the following typical composition (1):40-75% H2;15-20% CO_2;approx 10% H_2O;0-25% N_2 and 0,5-1% CO.