Gasoline particulate filter

Abstract

A particulate filter, which comprises a substrate comprising a plurality of porous walls extending longitudinally to form a plurality of parallel channels extending from an inlet end to an outlet end, wherein a quantity of the channels are inlet channels that are open at the inlet end and closed at the outlet end, and a quantity of channels are outlet channels that are closed at the inlet end and open at the outlet end; and a layer of inorganic particles loaded on surfaces of porous walls in the inlet channels and/or outlet channels, wherein the inorganic particles comprise or consist of boehmite particles. The present invention also relates to a method for producing a particulate filter which includes applying inorganic particles comprising or consisting of boehmite particles in inlet channels and/or outlet channels of a substrate.

Dependencies are inferred from the claim text.