| 摘要 |
There is provided a honeycomb structure excellent in purification efficiency, having low pressure loss, and mountable even in a limited space. The honeycomb structure includes: porous partition walls 4 having a large number of pores and disposed to form a plurality of cells 3 communicating between two end faces 2a, and plugged portions 10 disposed to plug each of the cells 3 on one of the end faces 2a. A percentage of the number of carbon particulates contained in combustion exhaust gas satisfying the following condition (1) and passing through a honeycomb structure is 80% or more at a space velocity of 25000/h. The condition (1) is that the carbon particulates has a mean diameter of 0.07 to 0.2 µm, a ratio of the carbon particulates having a diameter of 1 µm or more is 0.1% or less in number and that a concentration of the carbon particulates is 10 mg/m 3 . |
