Patent ID: 7147947

Claim:
A fuel cell system comprising: a fuel reformer for generating a feed stock comprising H 2 and CO; a CO-selective oxidation reactor in fluid communication with said fuel reformer for treating said feed stock to oxidize CO, wherein said CO-selective oxidation reactor comprises a housing disposed around a substrate comprising a CO-selective oxidation catalyst comprising: a catalytic material selected from the group consisting of Pt, Pd, Rh, Ir, Os, Ru, Ta, Zr, Y, Ce, Ni, Cu, and oxides, alloys, and compounds thereof, a modifying agent selected from the group consisting of Pb, and alloys, nitrates, sulfides, and chlorides thereof in an amount of about 2 to about 25 atomic percent based on the total surface atoms of said catalytic material, and a support; and a fuel cell in fluid communication with said CO-selective oxidation reactor.