Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1996-05-14
2000-07-11
Griffin, Walter D.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502325, 502326, 502327, 502328, 502329, 502330, 502303, 502304, 502334, 502335, 502336, 502339, B01J 2344
Patent
active
060872985
ABSTRACT:
The present invention relates to an exhaust gas treatment catalytic article having an upstream catalytic zone and at least one downstream catalytic zone. The upstream catalytic zone has an upstream composition which has a first upstream support, and at least one first upstream palladium component. The upstream zone can have one or more layers. The downstream catalytic zone has a first downstream layer which has a first downstream support and a first downstream precious metal component. A second downstream layer has a second downstream support and a second downstream precious metal component.
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Rabinowitz Harold N.
Smaling Rudolf M.
Sung Shiang
Engelhard Corporation
Griffin Walter D.
Negin Richard A.
Preisch Nadine
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