Three-way catalyst for automotive emission control

U.S. Patent Number: 5376344

Abstract: A three-way catalyst for automotive emission control having a mechanical carrier having a support comprised substantially of alumina, a catalytic compound supported on said carrier having a major constituent of palladium, and a discontinuous phase of titanium oxide on or adjacent substantially each exposed particle of the catalytic compound. A method of making a three-way catalyst for automotive emission control, comprising: impregnating with palladium a mechanical carrier having a support comprised substantially of alumina to produce a composite having 0.05-5.0% palladium; and impregnating the composite with an organo-titanium compound and decomposing such impregnated compound to form a discontinuous titanium oxide phase on or adjacent the exposed portions of said composite.

Inventors: Chattha; Mohinder S. (Northville, MI), Watkins; William L. H. (Toledo, OH), Gandhi; Haren S. (Farmington Hills, MI)

Assignee: Ford Motor Company (Dearborn, MI)

Application Number: 07/649,409

Issued: 1994-12-27

Expired: 2006-12-27

Classes: 423/213.5

Field of search: 502/338 423/213.5,213.2

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