Patent ID: 7824455
Filing Date: 2010-11-02
Classification: B01J,C01B,C10K,Y02P

Abstract:
1. A method of reducing an amount of carbon monoxide in a feed stream for a fuel cell, comprising: introducing a hydrocarbon feed stream into a primary reactor and reacting the hydrocarbon feed stream in effective contact with a reforming catalyst forming primary reactor products containing hydrogen, carbon monoxide, carbon dioxide, and methane; placing a high activity water gas shift catalyst system into a water gas shift converter, the high activity water gas shift catalyst system comprising a noble metal; a mixed metal oxide support consisting essentially of cerium oxide and zirconium oxide, wherein cerium oxide is present in an amount from about 58% to about 80% by weight of mixed metal oxide and zirconium oxide is present in amount from about 42% to about 20% by weight of mixed metal oxide, and optionally a support dopant; and about 0.1% to about 1.0% by weight of total catalyst of a promoter comprising alkali metals, or alkaline earth metals, or combinations thereof; and introducing the primary reactor products into the water gas shift converter in effective contact with the high activity water gas shift catalyst system, and reacting the carbon monoxide and water to form carbon dioxide and hydrogen using a water gas shift reaction forming the feed stream for the fuel cell; and introducing the feed stream into the fuel cell; wherein the high activity water gas shift catalyst system converts at least 50% of the carbon monoxide in the primary reactor products into carbon dioxide and hydrogen by the water gas shift reaction over a temperature range from about 300° C. to about 450° C.