EXHAUST GAS PURIFICATION CATALYST, EXHAUST GAS PURIFICATION DEVICE AND FILTER, AND PRODUCTION METHOD FOR SAID CATALYST
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United States of America Patent
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Feb 28, 2013
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Mar 12, 2012
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Abstract
Provided is an exhaust gas purification catalyst having high catalytic activity enabling combustion of PM (particulate matter) at low temperatures and excellent thermal resistance, an exhaust gas purification device and filter having high combustion efficiency of PM and excellent durability, and a method for producing the catalyst. The exhaust gas purification catalyst of the present invention is composite oxide particles containing at least one alkali metal, Si, and Zr.
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