| abstract |
A composition of matter comprising titania and Pt and/or Pd is prepared by a process comprising one step of heating Pt and/or Pd/impregnated titania with a reducing gas, in particular free hydrogen, at a temperature of about 300°-800° C. Another composition of matter comprising titania and Pt and/or Pd is prepared by a process comprising the steps of coating a porous ceramic material (preferably a monolith) with colloidal TiO 2 , drying, impregantion with Pt and/or Pd, drying/calcining, and reducing with a reducing gas, in particular free hydrogen, at a temperature of about 0°-300° C. Both compositions of matter are used as a catalyst in a process for oxidizing CO to CO 2 , e.g., in a CO 2 laser. |