- 专利标题: Ceramic catalyst body
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申请号: US09960498申请日: 2001-09-24
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公开(公告)号: US07067452B2公开(公告)日: 2006-06-27
- 发明人: Masakazu Tanaka , Tosiharu Kondo , Tomohiko Nakanishi , Kazuhiko Koike , Takashi Kondo , Tomomi Hase , Miho Ito
- 申请人: Masakazu Tanaka , Tosiharu Kondo , Tomohiko Nakanishi , Kazuhiko Koike , Takashi Kondo , Tomomi Hase , Miho Ito
- 申请人地址: unknown Kariya JP Nishio
- 专利权人: Denso Corporation,Nippon Soken, Inc.
- 当前专利权人: Denso Corporation,Nippon Soken, Inc.
- 当前专利权人地址: unknown Kariya JP Nishio
- 代理机构: Posz Law Group, PLC
- 优先权: JP2000-298005 20000929; JP2000-298019 20000929; JP2001-225454 20010726; JP2001-225615 20010726
- 主分类号: B01J23/00
- IPC分类号: B01J23/00 ; B01J21/00
摘要:
(i) In a ceramic catalyst body which comprises a ceramic carrier which has a multitude of pores capable of supporting a catalyst directly on the surface of a substrate ceramic and a catalyst supported on the ceramic carrier, a layer containing an anti-evaporation metal such as Rh is formed on the outer surface of catalyst metal particles such as Pt or Rh. The layer containing the anti-evaporation metal protects the catalyst metal and prevents evaporation thereof, thereby suppressing the deterioration; and/or(ii) A ceramic catalyst body is made by having a main catalyst component and a promoter component directly on a ceramic carrier which can directly support the catalyst by substituting a part of the constituent elements of cordierite, and a trap layer is provided in the upstream thereof for trapping sulfur which is a catalyst poisoning component included in the exhaust gas. Since sulfur included in the exhaust gas can be collected by the trap layer, the catalyst poisoning component can be removed from the gas which enters the catalyst, thus preventing catalyst poisoning.
公开/授权文献
- US20020039966A1 Ceramic catalyst body 公开/授权日:2002-04-04