| abstract |
A PEM fuel cell system in which an oxidizer is provided and in which the catalyst for the oxidizer is an OMS-2 catalyst and, in particular, an M-OAS-2 catalyst. Preferable catalysts are Co-OMS-2, Cu-OMS-2 and Ag-OAS-2 and, more preferably, Ag-OMS-2. Also, the effectiveness of the oxidizer is enhanced by one or more of the controlled addition of oxidant to the fuel feed and/or oxidizer, controlling the space velocity of the fuel feed and controlling the operaring temperature of the oxidizer. A system for regeneration of the M-OMS-2 catalyst and a method of making the catalyst are additionally provided. |