Yoshida, Katsumi [Inventor], Jayaseelan, Daniel Doni [Inventor], Hidenori, Kita [Inventor], Kondo, Naoki [Inventor], Hiuga, Hideki [Inventor], Koike, Kazuhiko [Inventor] and Nakanishi, Tomoshiko [Inventor] (2007) Katsumi Yoshida et al. Ceramic carrier, ceramic catalytic body and methods for manufacturing them. JP2007244993 (A).

Abstract

To provide a ceramic carrier having a cordierite porous body, which is stable at high temperature and has high specific surface area, as a base material and a granular agglomerate in which fibrous ceramics are intertwined with one another and to provide a ceramic catalytic body. ;SOLUTION: The cordierite-based porous ceramic carrier has the granular agglomerate in which fibrous ceramics are intermingled with one another. The ceramic catalytic body is manufactured by depositing a catalyst component on the porous ceramic carrier and has fibrous ceramics. A method for manufacturing the porous ceramic carrier comprises a step of reacting a part of a raw material with a porogen to produce the granular agglomerate of fibrous ceramics intermingled with one another on the surface of a sintered compact at a firing step. As a result, a catalyst-deposited honeycomb structure can be obtained, which has large specific surface area, the decrease of whose specific surface area due to the sintering is restrained, which has a small heat capacity and consequently is activated in early stages and has a small pressure loss, the cordierite porous body as the base material and the granular agglomerate of fibrous ceramics intermingled with one another

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