TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: Alternately the catalyst comprises a cerium oxide support, copper or an oxide, 0.1 weight% or more of platinum group metal dispersed on the cerium oxide support. The catalyst comprises 4-12 weight% copper or an oxide.The platinum group metal of the catalyst is platinum.The catalyst comprises 10 weight% or more of cerium oxide.The catalyst is in the form of particles having a mesh size of 12 or more and a Brunauer-Emmett-Teller (BET) surface area of 10 m2/g or more.The catalyst comprises at least 50 weight% of alumina support, 6-12 weight% of copper or oxide, 0.01-0.5 weight% of platinum and 10-25 weight% of cerium oxide dispersed on the support.The input gas stream further comprises 10 volume% or more of hydrogen, 10 volume% or more of steam and 2 volume% or less of oxygen.The stream is contacted with the catalyst below 300degreesC, preferably below 450degreesC. SPECIFIC COMPOUNDS - The reducible metal oxide is cerium oxide and the oxide support is activated alumina.    EXAMPLE - 1/8 inch alumina support particle ALCOADD-443 (TM) were dried for 2 hours at 200degreesC and then calcined for 2 hours at 500degrees C. The calcined particles were then impregnated in an aqueous solution of cerium nitrate (Ce(NO3)3). The aqueous solution contained Ce(NO3)3 (in g) (33.44) dissolved in water (55). The particles were dried at 120degrees C for 8 hours and calcined at 500degrees C for 2 hours. The ceria/alumina particles were impregnated with copper nitrate solution at 6 pH and dried for 8 hours at 120degrees C. The copper nitrate solution contained copper nitrate (26.6 ml) and deionized water (32 ml). The particles were calcined at 500degreesC for 2 hours and catalyst precursor particles were prepared. The particles were impregnated with platinum ammonium nitrate (Pt(NH3)4(NO3)2). 200 ng of Pt(NH3)4(NO3)2 per 100 g of catalyst precursor particles in 35 ml of water was used. A catalyst containing 0.1 weight% of platinum was obtained. The catalyst was dried at 120degreesC for 4 hours and then calcined at 500degrees C for 4 hours. The deactivation rate of the catalyst was reduced in reduced temperature conditions compared with the copper based water gas shift catalysts. The catalyst obtained had improved stability.