Exhaust gas purifying catalyst
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United States of America Patent
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Apr 17, 1990
Grant Date -
N/A
app pub date -
Jul 8, 1988
filing date -
Jul 9, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An exhaust gas purifying catalyst of this invention comprises a heat resistance stainless steel catalyst support, an oxide film containing zirconium oxide formed on the heat resistance stainless steel catalyst support, an activated alumina catalyst carrier layer formed on the oxide film, and at least one metal catalyst loaded in the activated alumina catalyst carrier layer. Thus, the activated alumina catalyst carrier layer's come-off from the catalyst support and the oxidation of the catalyst support are suppressed at the same time, and the conversions of the hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx) are also improved.
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