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公开(公告)号：WO2022071926A1
公开(公告)日：2022-04-07
申请号：PCT/US2020/053318
申请日：2020-09-29
Inventor： CLOWES, Lucy , GOODWIN, John , RAVENSCROFT, Alex , ROBSON, Chris , WARREN, Sarah
Abstract: A catalyst article and its use in an exhaust system for internal combustion engines is disclosed. The catalyst article comprises a substrate which is a wall-flow filter, a first catalyst composition, and a second catalyst composition. The first and second catalyst compositions each independently comprise an oxygen storage component (OSC) derived from a CeZr mixed oxide sol having a D90 of less than 1.3 micron and a particulate inorganic oxide having a D90 of from 1 to 20 microns.
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