EXHAUST GAS PURIFYING CATALYST AND METHOD FOR PURIFYING EXHAUST GAS USING THE CATALYST
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United States of America Patent
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Issued Date -
Aug 18, 2011
app pub date -
Oct 16, 2009
filing date -
Oct 17, 2008
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Abstract
A catalyst for exhaust gas purification of the present invention contains the thin-plate-like ceria (CeO.sub.2) as a catalytic active component. According to the catalyst for exhaust gas purification of the present invention, among CO, HC, and NOx, which are hazardous components contained in exhaust gas, particularly, NOx, can be removed efficiently. The present invention can be used as, what is called a NOx trapping catalyst, which stores NOx in oxidizing atmosphere, and discharges and reduces NOx in reducing atmosphere.
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