Method for removing CO, H₂and CH₄from an anode waste gas of a fuel cell and catalyst system useful for removing these gases

摘要

A system for removing CO, H2 and CH4 from an anode waste gas stream from a fuel cell is disclosed. The two catalyst system may comprise a platinum/palladium catalyst and a copper/manganese catalyst. The anode waste stream comes in contact with the platinum/palladium catalyst prior to contacting the copper/manganese catalyst.

主权项

1. A method for removing CO, H2 and CH4 from an anode waste gas stream from a fuel cell configured to convert hydrogen and carbon monoxide to water and carbon dioxide, the method comprising passing the anode waste gas stream comprising CO, H2 and CH4 through a catalyst system, wherein the anode waste gas stream first contacts a platinum/palladium catalyst and then contacts a copper/manganese catalyst, wherein the contacting with the platinum/palladium catalyst and with the copper manganese catalyst completely converts the CO and H2 of the anode waste gas stream, and converts at least 85 percent of the CH4 of the anode waste gas stream.