Catalytic activity of Pt2+ ion substituted CeO2 synthesized by solution combustion method was tested for low-temperature water gas shift reaction in H-2 rich steam reformate. XPS studies show that Pt is dispersed as ions and there is no change in Pt oxidation state after the reaction. CO conversion is found to be maximum at 200 degreesC over Ce1-xPtxO2-delta catalysts without any methanation. The values of rate are 1.86 and 4.66 mumol/g/s at 125 and 150 degreesC respectively with a dry gas flow rate of 6 Lh(-1) over 2% Pt/CeO2.