HONEYCOMB STRUCTURE

摘要

A honeycomb structure that can carry, without causing an increase in pressure loss, a catalyst carrier and a catalyst depending on the level of the ratio of fine pores having a pore diameter of not more than 10 µm to the entire pores of the honeycomb structure and on a porosity and that can sufficiently achieve a catalyst function. The honeycomb structure is constructed by adhering porous ceramic members with adhesive layers in between, where the porous ceramic members are each composed of cells penetrating in the longitudinal direction with wall sections in between and where either of the ends of each of the cells is sealed. Where X₁ (%) is the ratio of the volume of pores having a pore diameter of not more than 10 µm to the volume of the entire pores of the porous ceramic member, Y₁ (%) the porosity, Z₁ (g/l) the weight of the catalyst carrier layer, X₁, Y₁, and Z₁ satisfy the following expressions: X₁ = 20 - Z₁/10 ...(1) Y₁ = 35 + 7Z₁/40 ...(2) (where 20 = Z₁ = 150)