Patent ID: 8110274
Filing Date: 2012-02-07
Classification: B01D,F01N,Y02T,Y10T

Abstract:
1. A honeycomb structure aggregate, comprising: a plurality of the honeycomb structures bonded together by a sealing material layer, wherein: each of the honeycomb structures comprises a plurality of through-holes separated by a separation wall and provided in parallel along a longitudinal direction thereof, all of the through-holes being open on both end faces of the honeycomb structure; each of the honeycomb structures further comprises ceramic particles and an inorganic fiber and/or a whisker; an area of a cross section of each of the honeycomb structures being perpendicular to a perforating direction of the through-holes is 5 cm a thickness of the separation wall is about 0.25 mm or less; a length of each of the through-holes is about 50-fold or greater and about 350-fold or less of a hydraulic diameter of each of the through-holes; and an open area ratio (X) % of a cross section of each of the honeycomb structures perpendicular to the through-holes and a surface area per unit volume (Y (m wherein the surface area per unit volume (Y) is less than or equal to about 70,000 m