| abstract |
To provide a honeycomb catalyst body with sufficient partition wall strength, low pressure loss, thin partition walls, high particulate matter collection efficiency, and high exhaust gas purification efficiency. A porous partition wall 4 having a large number of pores and a cell 3 arranged so as to form a plurality of cells 3 communicating between two end surfaces, and any one of the end surfaces or the cell 3 is provided. A honeycomb structure 100 having a plugged portion 10 disposed so as to be plugged inside, and a catalyst layer 15 containing a catalyst supported on the surface of the partition wall 4. A honeycomb catalyst body having a thickness of 76.2 to 177.8 μm, an average pore diameter of 8 to 30 μm, a porosity of 10 to 35%, and a density of cells 3 of 12.4 to 45.0 cells / cm 2 300. [Selection] Figure 1 |