To provide a honeycomb filter having an excellent NOx removal rate.
The honeycomb filter includes a honeycomb-structured body, which is constituted so that a large number of cells are parted from one another by cell walls and arranged in parallel in the longitudinal direction of the honeycomb-structured body and each of cells is sealed at one end thereof, and zeolite deposited on the cell wall of the honeycomb-structured body. The amount of the zeolite deposited on the cell wall is 80-150 g/L. The porosity of the cell wall of the honeycomb-structured body is 55-65%. The cell density in the cross section, perpendicular to the longitudinal direction, of the honeycomb-structured body is 46.5-62.0 pieces/cm2. The thickness of the cell wall of the honeycomb-structured body is 0.2-0.3 mm. The large number of cells include large-volume cells and small-volume cells. The ratio of an area of the cross sections, perpendicular to the longitudinal direction, of the large-volume cells to that of the cross sections, perpendicular to the longitudinal direction, of the small-volume cells is 1.4-2.4.
OGASAWARA TOYOKI
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