| abstract |
A honeycomb structure suitably used as a catalyst carrier for exhaust gas purification is provided. A partition wall 1 that defines a cell 2 is formed with small pores 16 having a pore diameter of less than 14 μm and air holes 15 having a pore diameter of 14 μm or more. The porosity of the partition wall 1 is 50 to 70%. And the porosity of the air holes 15 in the partition wall 1 is 30% or more, the ratio of the total volume of the small pores 16 to the total volume of the air holes 15 is 20% or more, and the pore diameter distribution of the partition wall 1 The pore diameter at the maximum peak value of the atmospheric pore 15 is 20 to 200 μm, the pore diameter at the maximum peak value of the small pore 16 is 0.1 to 8 μm, and the atmospheric pore 15 A honeycomb structure 100 in which a value obtained by dividing the porosity value (%) by the thickness value (μm) of the partition walls 1 is 0.2 or more. [Selection] Figure 4 |