Pillar-shaped honeycomb structure

Abstract

A pillar-shaped honeycomb structure includes an outer peripheral side wall, and a plurality of partition walls disposed on an inner peripheral side of the outer peripheral side wall, partitioning a plurality of cells penetrating from a first end surface to a second end surface and forming flow paths each having an opening at both ends, wherein an average porosity of the plurality of partition walls measured according to a mercury porosimetry method specified in JIS R1655: 2003 is 50 to 60%; and wherein a ratio of a volume occupied by pores having a pore diameter of 6 μm or more to a total pore volume of the plurality of partition walls measured according to the mercury porosimetry method specified in JIS R1655: 2003 is 40% or less.

Dependencies are inferred from the claim text.