catalyst with myckett good vaermebestaendighet foer anvaendning for purification of exhaust gas fraan foerbraenningsmotorer and foerfarande foer framstaellning daerav

摘要

An exhaust gas purifying catalyst having excellent heat resistance comprises a platinum-group element, active alumina, cerium oxide, a barium compound and a zirconium compound on a monolithic support. The barium compound is preferably barium hydroxide, barium oxide or barium carbonate. The zirconium compound is preferably zirconium oxide.