Gasoline Particulate Filter

Abstract

1. A particulate filter comprising: a substrate including a plurality of porous walls (10) extending longitudinally to form a plurality of parallel flow passages extending from an inlet end (01) to an outlet end (02), a volume of the flow passages being inlet flow passages (11) that are open at the inlet end (01) and closed at the outlet end (02), and a volume of the flow passages being outlet flow passages (12) that are closed at the inlet end (01) and open at the outlet end (02); and a layer of inorganic particles loaded on a surface of the porous walls (10) in the inlet flow passages (11) and / or outlet flow passages (12) of the substrate, preferably at least in the inlet flow passages (11), the inorganic particles comprising a first inorganic component selected from alumina, zirconia, ceria, silica, titania, zinc oxide, zinc carbonate, calcium oxide, calcium carbonate, silicate zeolite, aluminosilicate zeolite, or any combination thereof, and manganese oxide as a second inorganic component.

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