Palladium containing catalyst for treatment of automotive exhaust
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United States of America Patent
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Oct 2, 1990
Issued Date -
N/A
app pub date -
Jul 25, 1989
filing date -
May 23, 1988
priority date (Note) -
Expired
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Abstract
This application relates to a catalyst for treating automotive exhaust. The catalyst comprises a honeycomb carrier having deposited thereon a layer of alumina which has dispersed thereon lanthanum oxide, cerium oxide, palladium oxide and rhodium metal. The lanthanum oxide is present as crystallites that are less than about 25 Angstroms in size. The cerium oxide contains 3% lanthanum in the cerium oxide crystal lattice and the palladium oxide is present as crystallites which are less than about 20 Angstroms in size. A method of manufacturing the catalyst and process for using the catalyst are also disclosed and claimed.
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