Highly active and highly selective new catalysts for the selective oxidation of CO in excess H-2 were prepared by depositing large amount of FeOx on 2 wt.% Pt/Al2O3, 1 wt.% Pt/CeO2, and 1 wt.% Pt/TiO2 catalysts (100 times in weight of the Pt). Optimum activity of the FeOx/Pt/Al2O3 and FeOx/Pt/CeO2 catalysts was attained at 130-140degreesC while that of the FeOx/Pt/TiO2 catalyst was at 70-100degreesC in the space velocity of 15,000 and 36,000 h(-1). CO conversion of the FeOx/Pt/TiO2 catalyst was ca. 70% at 40degreesC in a flow of 15,000 h(-1). Optimum temperature of the FeOx/Pt/Al2O3, FeOx/Pt/CeO2, and FeOx/Pt/TiO2 catalysts depends on the support oxides, and the feature of the new catalysts is different from that of such metallic catalyst as Pt/Al2O3, Pt/CeO2, and Pt/TiO2. (C) 2004 Elsevier B.V. All rights reserved.