PASS -THROUGH CATALYTIC SUBSTRATE INCLUDING FLOW CHANNELS HAVING BEVELED CORNER AND MANUFACTURING METHOD

摘要

A pass-through catalytic substrate can comprise a plurality of porous ceramic substrate walls defining flow channels extending between an inlet end and an outlet end of the catalytic substrate. The pass- through catalytic substrate can include a plurality of porous ceramic beveled corner portions positioned at intersecting corners of the substrate walls within the flow channels. The porous ceramic beveled corner portions each include a heat capacity less than about 1.38 J/ cm3/K. A catalytic washcoat layer is coated on the porous ceramic substrate walls and the porous ceramic beveled corner portions. Methods for producing a pass-through catalytic substrate also provide porous ceramic beveled corner portions.