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Title:
CATALYTIC ARTICLE
Document Type and Number:
WIPO Patent Application WO/2004/047984
Kind Code:
A1
Abstract:
An catalytic article which has a porous carrier formed by binding a number of aggregate particles containing a non-oxide ceramic as a main component with one another in a state of the presence of a number of pores and, carried thereon, a catalyst layer containing a compound of an alkali metal, wherein the porous carrier comprises an oxide film inevitably formed on a part of the surface of an aggregate particle, and further a preventive layer for the oxide film comprising a substance not forming a low melting point glass with an alkali metal, which layer is formed between the oxide film and the catalyst layer so as to cover at least a part of the oxide film.

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Inventors:
ICHIKAWA SHUICHI (JP)
UCHIDA YASUSHI (JP)
Application Number:
PCT/JP2003/014725
Publication Date:
June 10, 2004
Filing Date:
November 19, 2003
Export Citation:
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Assignee:
NGK INSULATORS LTD (JP)
ICHIKAWA SHUICHI (JP)
UCHIDA YASUSHI (JP)
International Classes:
F01N3/08; B01D53/88; B01D53/94; B01J23/58; B01J27/224; B01J27/24; B01J32/00; B01J33/00; B01J35/04; B01J37/02; F01N3/28; B01J21/06; (IPC1-7): B01J23/58; B01J27/224; B01J27/24; B01J32/00; B01J33/00; B01J35/04; B01D53/94; F01N3/28
Foreign References:
JP2002059009A2002-02-26
JP2002095968A2002-04-02
JP2002282634A2002-10-02
Other References:
See also references of EP 1566214A4
Attorney, Agent or Firm:
Watanabe, Kazuhira (No.8 Kikuboshi Tower Building 20-18, Asakusabashi 3-chom, Taito-ku Tokyo, JP)
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