| 摘要 |
An object of the present invention is to provide a honeycomb structured body capable of keeping an amount of a supported catalyst to a low level, sufficiently burning and removing particulates, and suppressing an increase in a pressure loss. The pillar-shaped honeycomb structured body according to the present invention includes: a plurality of cells placed in parallel with one another in a longitudinal direction with a cell wall therebetween; a plug sealing either one of end portions of the cell; and a catalyst being supported on the cell wall, wherein the plurality of cells are composed of large-volume cells and small-volume cells, the large-volume cell has a larger cross-sectional area perpendicular to a longitudinal direction thereof than a cross-sectional area perpendicular to the longitudinal direction of the small-volume cell, the large-volume cell is sealed at one end portion of the honeycomb structured body, while the small-volume cell is sealed at the other end portion of the honeycomb structured body, and the catalyst is supported only on the cell walls forming the large-volume cells, or on both of the cell walls forming said large-volume cells and the cell walls forming said small-volume cells, and an amount of the catalyst supported on the cell walls forming the large-volume cells is larger per unit volume than that of the catalyst supported on the cell walls forming the small-volume cells. |
