Patent ID: 8465703
Filing Date: 2013-06-18
Classification: B01D,B01J,Y02T

Abstract:
1. A filter catalyst comprising: a catalyst-support substrate comprising a heat-resistant porous structure having chained pores; and a catalytic layer for burning particulates, the catalytic layer formed on a surface of the catalyst-support substrate; the filter catalyst being characterized in that an SEM photograph on a cross section of the filter catalyst is turned into electronic data so that, in an image being turned into electronic data, a ratio of a number of pixels forming an outer periphery of the catalytic layer to a number of pixels forming the catalytic layer is 0.5 or more; wherein: forming the catalytic layer comprises removing excess oxide slurry by repeating a pressure fluctuation at both ends of the catalyst-support substrate; and particles forming the oxide slurry having a diameter of 1 μm or less are present in an amount of 70% or more by weight of an entire amount of particles forming the oxide slurry.