Catalyst system for CO-removal from hydrogen-rich fuel cell feed gas

摘要

The invention refers to a catalyst system for CO-removal from hydrogen containing fuel cell feed gas comprising at least two locally separated catalyst materials C1 and C2, wherein the first catalyst material C1 shows at a temperature of 100 °C a higher selectivity with respect to CO-oxidation than the second catalyst material C2 and/or the second catalyst material C2 shows at a temperature of 100 °C a higher conversion rate with respect to CO-oxidation than the first catalyst material C1. Preferably C1 is Cu-MnO2 catalyst and C2 is Pt-Co/ alumina catalyst. The invention is further directed to a gas reactor which contains such a catalyst system, a method for carbon monoxide removal from a gas mixture and the use of a catalyst system according to this invention for carbon monoxide removal.