| 摘要 |
<p>The purpose of the present invention is to provide a honeycomb filter having a high regeneration limit value: that is, a honeycomb filter comprising a pillar-shaped honeycomb fired body having a large number of cells longitudinally disposed in parallel with one another with a cell wall therebetween, with either one end of each of the cells being sealed,
the honeycomb filter allowing gases having flowed in through either one of the end face sides to flow out from the other end face side,
wherein
the thickness of each of the cell walls is 0.20 to 0.28 mm;
no catalyst supporting layer is formed in the area covering 10 % of the overall length of the honeycomb filter from the end face on the gas outlet side of the honeycomb filter;
out of the area covering 90% of the overall length of the honeycomb filter from the end face on the gas inlet side, a catalyst supporting layer is formed in the area covering 25% to 90% of the overall length of the honeycomb filter; and
a thermal conductivity of the area with the catalyst supporting layer being not formed therein is higher than a thermal conductivity of the area with the catalyst supporting layer being formed therein.</p> |
