Nixon & Vanderhye P.C.
Ceramic filter and catalyst-loaded ceramic filter
A catalyst-loaded ceramic filter made of a ceramic material capable of directly supporting a catalyst component thereon is capable of providing early activation of the catalyst with a low coefficient of thermal expansion and light weight, without compromising the high porosity of the filter substrate. A catalyst-loaded ceramic filter is made of a ceramic material of which one or more kinds of element among its constituent elements is substituted with an element other than the constituent elements, for example a ceramic material with a part of Si or other elements included in cordierite is substituted with W or Co, as a filter substrate of honeycomb structure having a number of cells separated by porous walls, and supporting a catalyst such as a noble metal directly on the W.
Denso Corporation
F F F Y B Y
F01N F01N F01N Y02T B01D Y10T
inventional inventional additional additional inventional additional
Masakazu Mamoru Hiromi Tosiharu
Tanaka Nishimura Sano Kondo