Process for treating automotive exhaust gases using monolith washcoat having optimum pore structure

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United States of America Patent

PATENT NO 4859433
SERIAL NO

07198810

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Abstract

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An optimum washcoated ceramic monolith for treating automotive exhaust gases is made by (a) specifying the reactants, process conditions and desired time on stream; (b) determining from the parameters in step (a) the pore size distribution and thickness of the washcoat to produce the desired auto exhaust conversion; (c) preparing a washcoat catalyst with an alumina having the desired pore size distribution; and (d) applying the prepared washcoat catalyst to a ceramic or metal monolith to produce a finished automotive exhaust gas catalyst. Following this process the optimized washcoated catalyst can then be used to treat automotive exhaust gases.

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Patent Owner(s)

Patent OwnerAddress
W R GRACE & CO -CONNCOLUMBIA MD

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hegedus, Louis Rockville, MD 18 385
Kubsh, Joseph E Silver Spring, MD 4 77
Pereira, Carmo J Silver Spring, MD 13 229

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