Exhaust gas cleaning catalyst complex and method for producing the same

摘要

An object is to elevate the NOx cleaning rate and heat resistance of an exhaust gas cleaning catalyst complex which comprises a noble metal catalyst supported on zeolite. Ni is supported in the form of NiO powder on said zeolite. Said NiO acts as a cocatalyst without the coverage of the activation site of the catalyst complex and closure of the gas passage by said NiO so as to elevate the NOx cleaning rate and heat resistance.