Catalyzed diesel particulate matter filter with improved thermal stability
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United States of America Patent
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Nov 21, 2006
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app pub date -
Aug 29, 2003
filing date -
Nov 13, 2001
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Abstract
A catalyzed diesel particulate matter exhaust filter with improved diesel particulate matter oxidation activity and thermal stability including a porous filter substrate for filtering the diesel particulate matter washcoated with high surface area support alumina, titania, silica and zirconia promoted with one of ceria, lanthanum oxide, tungsten oxide, molybdem oxide, tin oxide for catalytic materials which includes an alkaline earth metal vanadate, and a precious metal
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