Patent ID: 7879431
Filing Date: 2011-02-01
Classification: B01D,B01J,C04B,F01N,Y02T,Y10T

Abstract:
1. A honeycomb structure, comprising: multiple honeycomb units having multiple through holes, all of the through holes being open on an end face of the honeycomb unit except the through holes in outer faces of the honeycomb units; and a seal layer that joins honeycomb units with each other via the respective closed outer faces of the honeycomb units where the through holes are not open, wherein the honeycomb unit includes at least inorganic particles, inorganic fibers and/or whiskers, and the inorganic fibers and/or whiskers increase a specific surface area of an inner wall of the multiple through holes; a cross section area of a honeycombed face of the honeycomb unit perpendicular to the through holes is about 5 to about 50 cm the flatness of an entire end face of the honeycomb units joined by the seal layer where the through holes are open is about 2.5 mm or less; the level difference between end faces of the honeycomb units joined by the seal layer is about 2.0 mm or less; and the specific surface area of about 35000 to about 70000 cm