Catalyst for purifying automotive exhaust gas
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United States of America Patent
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Nov 9, 1993
Grant Date -
N/A
app pub date -
Apr 3, 1992
filing date -
Apr 5, 1991
priority date (Note) -
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Abstract
An exhaust gas purifying catalyst for simultaneous removal of carbon monoxide, hydrocarbons and nitrogen oxides from an exhaust gas from an internal-combustion engine, having carried on a monolithic carrier a mixture comprising a catalytically active component comprising 0.5 to 30 g of palladium, 0.1 to 50 l g of an alkaine earth metal oxide, 10 go 150 g of cerium oxide, and 0.1 to 50 g of zirconium oxide and 10 to 300 g of an activated alumina.
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