Patent ID: 7504359
Filing Date: 2009-03-17
Classification: B01D,B01J,C04B,F01N

Abstract:
1. A honeycomb structural body comprising: at least one pillar-shaped porous ceramic member having a plurality of through-holes extending in a longitudinal direction of the at least one pillar-shaped porous ceramic member, the plurality of through holes partitioned by a plurality of partition walls, the through-holes being plugged at one end portion of the at least one pillar-shaped porous ceramic member, wherein the partition walls have a surface roughness of not less than 10 μm as a maximum roughness Rz defined in JIS B0601-2001 and an average pore size of 5-100 μm in a pore distribution measured by a mercury pressure method, and satisfy the following relationships: and when a ratio pores having a pore size of 0.9-1.1 times the average pore size to total pore volume is A (%) and a thickness of the partition walls is B (μm).