Exhaust gas purification filter, and method for producing same
AssigneeOtsuka Chemical Co., Ltd.
InventorsHiroyoshi Mori, Takahiro Mishima, Masaaki Fukuda, Sachio Fukuoka
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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.
Claims7
An exhaust gas purification filter 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.
Dependencies are inferred from the claim text.