Patent ID: 6190430
Filing Date: 2001-02-20
Classification: C01B,H01M,Y02E,Y02T,Y10S

Abstract:
A method for producing a hydrogen-containing gas for a fuel cell which comprises:adding pulse an oxygen-containing gas to a hydrogen-containing gas containing carbon monoxide to form a mixed gas, said hydrogen-containing gas being produced by a reforming reaction of an organic compound; andbringing said mixed gas into contact with a catalyst comprising a ruthenium metal as a main component and having a carbon monoxide adsorption of not less than 1 mmol/g-ruthenium and a carbon monoxide adsorption index as defined below of not less than 0.5, to thereby oxidize and remove carbon monoxide:Adsorption index=.SIGMA.X.sub.1 /.SIGMA.X=.SIGMA.X.sub.1 /(.SIGMA.X.sub.1 +.SIGMA.X.sub.2)whereinA=amount of carbon monoxide introduced/pulse=0.002 mmol/pulse=0.4 mmol/g-ruthenium/pulse;X=adsorption/pulse;Amount adsorbed=.SIGMA.X; andB=reversible adsorption,wherein X at the time when (X+B)/A.gtoreq.0.9 is taken as X.sub.1, and X at the time when (X+B)/A<0.9 is taken as X.sub.2.