| abstract |
Properties with high thermal conductivity despite the relatively high porosity, or with low refractive index materials or pigments that keep the overall thermal conductivity of the filter low, and the filter as a whole is easy to warm and hard to cool It aims at providing the filter for exhaust gas purification which shows this. This filter is provided with a catalyst coat layer carrying a catalytically active component on the surface of a porous ceramic carrier, the porosity of the porous ceramic carrier is 40 to 80%, and the thermal conductivity as a filter is It exhibits a characteristic of 3 to 60 W / mk, or contains a substance or pigment having a high refractive index and a thermal conductivity of 0.3 to 3 W / mk. |