TY - PAT
T1 - Ceramic carrier, ceramic catalytic body and methods for manufacturing them
AU - Yoshida, Katsumi
AU - Daniel, Doni
AU - Hidenori, Kita
AU - Kondo, Noaki
AU - Hiuja, Hideki
AU - Koike, Kazuhiko
AU - Nakanishi, Tomoshiko
N1 - Patent applicant: Katsumi Yoshida et al.
PY - 2007/9/27
Y1 - 2007/9/27
N2 - 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
AB - 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
KW - Metallurgy and materials
KW - Mechanical, aeronautical and manufacturing engineering
UR - https://worldwide.espacenet.com/publicationDetails/biblio?II=2&ND=3&adjacent=true&locale=en_EP&FT=D&date=20070927&CC=JP&NR=2007244993A&KC=A
M3 - Patent
M1 - JP2007244993 (A)
ER -