Patent ID: 6139808
Filing Date: 2000-10-31
Classification: B01D,B01J,Y02A,Y02T

Abstract:
A catalyst for exhaust gas purification capable of purifying hydrocarbons, nitrogen oxides and carbon monoxide present in exhaust gas discharged from an internal combustion engine, which catalyst comprises:a monolithic carrier; anda catalyst layer containing at least one noble metal, together with Ba and Cs, formed on the carrier,wherein the amount of the noble metal supported on said monolithic carrier is 10-700 g/ft.sup.3 (3.53.times.10.sup.-4 to 2.47.times.10.sup.-2 g/cc);and, Ba is supported on the monolithic carrier in an amount of 0.01-0.06 g/cc in terms of the amount of BaO;and a weight ratio of Cs expressed as Cs.sub.2 O and Ba expressed as BaO is 1:0.5 to 1:70.