Catalyst for purifying exhaust gas and method for purifying exhaust gas
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United States of America Patent
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Sep 14, 1999
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N/A
app pub date -
Feb 17, 1995
filing date -
Mar 23, 1992
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Abstract
A catalyst for purifying an exhaust gas for simultaneously removing carbon monoxide, hydrocarbons and nitrogen oxides contained in the exhaust gas under an oxygen rich atmosphere, comprising a carrier composed of a porous material, and barium oxide, lanthanum oxide and platinum supported on the carrier, and a method for purifying an exhaust gas by bringing the exhaust gas under an oxygen rich atmosphere into contact with the above-mentioned catalyst.
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