Oxidation catalyst and exhaust system to treat an exhaust gas, and capture brick.

摘要

an oxidation catalyst for treating an exhaust gas produced by a compression ignition engine comprising: a substrate; a catalytic material disposed on the substrate, wherein the catalytic material comprises platinum (pt); and a region comprising a capture material, wherein the capture material comprises a pt alloy metal disposed or supported on a refractory oxide, wherein the refractory oxide comprises at least 65% by weight of zirconia, wherein the region is arranged to contact the exhaust gas after the exhaust gas has contacted and / or passed through the catalytic material.