Method for purifying exhaust gases
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United States of America Patent
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Jul 19, 1994
Issued Date -
N/A
app pub date -
Apr 17, 1992
filing date -
Oct 18, 1989
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Abstract
A method for the catalytic purification of an oxygen-rich exhaust gas, wherein the catalyst comprises: a catalyst support, a zeolyte layer formed on the catalyst support and noble metals such as platinum, palladium and rhodium loaded on the catalyst. The catalyst for purifying the exhaust gas maintains a superior exhaust gas conversion performance over a long period of time.
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