Stock material or miscellaneous articles – Structurally defined web or sheet – Honeycomb-like
Patent
1982-07-15
1984-05-29
Epstein, Henry F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Honeycomb-like
422180, 428188, 502527, B32B 312
Patent
active
044515170
ABSTRACT:
A catalyst support provided with an activated alumina layer which is formed on the surface of the ceramic honeycomb structure is disclosed. The catalyst support of the present invention is formed of ceramic such as cordierite, of which coefficient of thermal expansion is lower than alumina and is provided with microcracks which occur when the honeycomb structure is formed. The activated alumina layer is formed on the surface of the catalyst support without filling the microcracks occurred therein. For example, the activated alumina layer is formed by adhering the activated alumina particulates to the surface of the honeycomb structure and firing the structure together with the activated alumina particulates after the microcracks occurred in the honeycomb structure are filled with such a material as to be burnt away at a temperature lower than the sintering temperature of activated alumina.
REFERENCES:
patent: 3839224 (1974-10-01), Yonehara et al.
patent: 3885977 (1975-05-01), Lachman et al.
patent: 4253992 (1981-03-01), Soejima et al.
patent: 4364760 (1982-12-01), Higuchi et al.
patent: 4404007 (1983-09-01), Tukao et al.
Inoguchi Kazuhiro
Isomura Keiichiro
Okamoto Kunio
Epstein Henry F.
Nippon Soken Inc.
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