Exhaust gas purification filter, and method for producing same
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United States of America Patent
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Jan 19, 2016
Grant Date -
Jul 4, 2013
app pub date -
Sep 22, 2011
filing date -
Oct 4, 2010
priority date (Note) -
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Abstract
Provided are an exhaust gas purification filter having a high particulate matter (PM) combustion efficiency, a low coefficient of thermal expansion, and superior thermal resistance and a method for producing the same. An exhaust gas purification filter is formed by sintering columnar aluminum titanate particles whose surfaces have a catalyst material deposited thereon and which have an average aspect ratio (=number average major-axis length/number average minor-axis length) of 1.3 or more, wherein a catalyst made from the catalyst material by thermal treatment during the sintering is supported on the surface of the aluminum titanate.
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