Honeycomb structured body

摘要

An object of the present invention is to provide a honeycomb structured body which is excellent in durability to thermal shock and vibration and has a high specific surface area. The honeycomb structured body of the present invention is a honeycomb structured body in which plural pillar-shaped honeycomb units are bonded to one another through sealing material layers, each unit having in the longitudinal direction a large number of cells placed in parallel with a cell wall interposed therebetween. Herein, each honeycomb unit includes inorganic fibers and/or whiskers in addition to inorganic particles. A cross-sectional area of the honeycomb unit on a cross section perpendicular to the longitudinal direction is 5 to 50 cm 2 . A region in which a sealing material layer is not formed is provided on both ends of the side faces of each of the honeycomb unit, each of the ends accounting for 0.3 to 5% of the length of the honeycomb structured body.