Patent ID: 7285258
Filing Date: 2007-10-23
Classification: B01D,B01J

Abstract:
1. Method of oxidizing CO in a mixture of gases including oxygen and at least 65% by volume hydrogen comprising passing said mixture of gases through a catalyst bed comprising an unsupported catalyst made by (a) preparing an aqueous iron/gold solution comprising an iron source and a gold source (b) gradually combining said iron/gold solution with an aqueous solution of an alkali metal base to maintain a pH of 7 to 9 in the combined solution as the solutions are combined, thereby producing solids in said combined solution (c) separating said solids from said combined solution (d) washing said solids, (e) drying said solids, (f) grinding said solids to a size range of 0.85 mm to 4.25 mm, (g) calcining said solids, and (h) activating said catalyst by passing a hydrogen and oxygen containing gas through said catalyst for at least 12 hours at a temperature of 60-90° C.