| abstract |
A honeycomb filter is provided that includes a pillar-shaped honeycomb fired body having a plurality of cells longitudinally disposed in parallel with one another with a cell wall therebetween, and with either one end of each of the cells being sealed. The honeycomb fired body has a first end face on a gas inlet side and a second end face on a gas outlet side. The cell wall has a thickness that is about 0.20 to about 0.28 mm. A catalyst supporting layer is formed in a catalyst-supporting-layer area covering about 25% to about 90% of an overall length of the honeycomb fired body, and no catalyst supporting layer is formed in a non-catalyst-supporting-layer area covering about 10% of the overall length of the honeycomb fired body that abuts the second end face. A thermal conductivity of the non-catalyst-supporting-layer area is higher than a thermal conductivity of the catalyst-supporting-layer area. |