B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 35/04 (2006.01) B01J 21/16 (2006.01) B01J 37/02 (2006.01) B01J 37/08 (2006.01) F01N 3/28 (2006.01) F02B 75/02 (2006.01)
Patent
CA 2201090
A disclosed ceramic honeycomb catalyst having an excellent thermal shock resistance in which a carrier is coated on a ceramic honeycomb structural body, has a mean thermal expansion coefficient in a range from 40 to 800 °C of smaller than 0.7x10-6/°C. Therefore, it is possible to obtain a ceramic honeycomb catalyst having an excellent thermal shock resistance in which a mechanical strength of a ceramic honeycomb structural body to which a carrier such as .gamma. -alumina is coated is not decreased and the carrier is not peeled off from the ceramic honeycomb structural body.
Catalyseur de céramique nid d'abeille offrant une excellente résistance aux chocs thermiques, dans lequel un véhicule est appliqué sur une structure en céramique nid d'abeille ayant un coefficient d'expansion moyen, entre 40 et 800 degrés Celsius, inférieur à 0,7 x 10-6 par degré Celsius. Il est ainsi possible d'obtenir un catalyseur de céramique nid d'abeille offrant une excellente résistance aux chocs thermiques, dans lequel la résistance mécanique d'une structure en céramique nid d'abeille auquel un véhicule, par exemple l'alumine-gamma, est appliqué, n'est pas diminuée et le véhicule n'est pas découpé de la structure en céramique nid d'abeille.
Ikeshima Koichi
Kumazawa Kazuhiko
Ngk Insulators Ltd.
Smart & Biggar
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