Palladium containing catalyst for treatment of automotive exhaus

Details Palladium containing catalyst for treatment of automotive exhaus Palladium containing catalyst for treatment of automotive exhaus

1989-07-25

1990-10-02

Russel, Jeffrey E.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

B01D 5336

Patent

active

049605747

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.

REFERENCES:
patent: 4791091 (1988-12-01), Bricker et al.
patent: 4868149 (1989-09-01), Bricker et al.

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