RUTHENIUM AND POTASSIUM CONTAINING NITRIC OXIDE STORAGE AND REDUCTION CATALYST

摘要

A ruthenium and potassium contained nitric oxide storage and reduction catalyst is provided to decrease the amount of use of precious metals by adding the ruthenium in the catalyst and to offer a high storage property. A ruthenium and potassium contained nitric oxide storage and reduction catalyst is characterized by dipping precious metals of 0.1 ~ 3 weight% as active components about an alumina(Al2O3) support. The precious metals are ruthenium of 0.1 ~ 10 weight%, potassium of 5 ~ 30 weight%, platinum, palladium, and rhodium. An alumina carrier includes a BET specific surface area of 50 ~ 350 m / g range.