Patent ID: 7238333
Filing Date: 2007-07-03
Classification: B01D,B01J,C01B,C10K,Y02P

Abstract:
1. A method of reducing an amount of carbon monoxide in process fuel gas in a water gas shift converter, comprising: placing a high activity water gas shift catalyst system into a water gas shift converter, the high activity water gas shift catalyst system consisting essentially of a noble metal; a support consisting essentially of cerium oxide, or a mixed metal oxide of cerium oxide-zirconium oxide wherein cerium oxide is present in an amount ranging from about 80% to about 20% by weight of total metal oxide and wherein zirconitmi oxide is present in an amount ranging from about 20% to about 80% by weight of total metal oxide, or a mixed metal oxide of cerium oxide-lanthanum oxide wherein cerium oxide is present in an amount ranging from about 80% to about 20% by weight of total metal oxide and wherein lanthanum oxide is present in an amount ranging from about 20% to about 80% by weight of total metal oxide; an anti-methanation agent consisting essentially of copper, or manganese, or iron, or combinations thereof; and a promoter comprising alkali metals or alkaline earth metals or combinations thereof; and passing the process fuel gas through the water gas shift converter in effective contact with the high activity water gas shift catalyst system and converting a portion of the carbon monoxide in the process fuel gas into carbon dioxide and hydrogen by a water gas shift reaction with no methane formation at a temperature in a range of about 200° C. to about 350° C.