Exhaust gas-purifying catalyst and method of manufacturing the same
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United States of America Patent
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Jan 17, 2012
Grant Date -
Jan 8, 2009
app pub date -
Sep 4, 2008
filing date -
Mar 30, 2006
priority date (Note) -
Expired
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Abstract
An object of the present invention is to provide an exhaust gas-purifying catalyst that is less prone to cause a decrease in its activity even when used at high temperatures in an atmosphere whose oxygen concentration is high. An exhaust gas-purifying catalyst of the present invention includes a composite oxide of alkaline-earth metal and aluminum, and platinum, wherein at least a part of the composite oxide and at least a part of the platinum forms a solid solution.
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