| 摘要 |
<p>An object of the present invention is to provide a honeycomb filter with an excellent NOx conversion rate, and the honeycomb filter of the present invention includes a honeycomb structured body having a large number of cells each sealed at either end thereof and placed longitudinally in parallel with one another with a cell wall therebetween and a zeolite supported on the cell wall of the honeycomb structured body, wherein an amount of the zeolite supported on the cell wall is 80 to 150 g/L, the large number of cells include a large volume cell and a small volume well, a porosity of the cell wall of the honeycomb structured body is 55 to 65%, an average pore diameter of the cell wall of the honeycomb structured body is 15 to 25 µm, and a proportion of a sum of a pore volume A and a pore volume B relative to a total pore volume C is 20% or less in a pore diameter distribution of the cell wall of the honeycomb structured body, the pore volume A indicating a pore volume of pores having a pore diameter of one half or less of the average pore diameter, the pore volume B indicating a pore volume of pores having a pore diameter of twice or more the average pore diameter.</p> |
