发明授权
- 专利标题: Method for catalytically coating ceramic honeycomb bodies
- 专利标题(中): 催化涂覆陶瓷蜂窝体的方法
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申请号: US12158843申请日: 2006-11-22
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公开(公告)号: US08278236B2公开(公告)日: 2012-10-02
- 发明人: Marcus Pfeifer , Paul Spurk , Markus Koegel , Egbert S. J. Lox , Thomas Kreuzer
- 申请人: Marcus Pfeifer , Paul Spurk , Markus Koegel , Egbert S. J. Lox , Thomas Kreuzer
- 申请人地址: DE Hanau-Wolfgang
- 专利权人: Umicore AG & Co. KG
- 当前专利权人: Umicore AG & Co. KG
- 当前专利权人地址: DE Hanau-Wolfgang
- 代理机构: Kalow & Springut LLP
- 优先权: DE102005062317 20051224
- 国际申请: PCT/EP2006/011152 WO 20061122
- 国际公布: WO2007/073807 WO 20070705
- 主分类号: B01J21/00
- IPC分类号: B01J21/00 ; B01J29/00
摘要:
The invention relates to a process for coating ceramic honeycomb bodies with a coating suspension containing, in a carrier liquid, catalyst components as solids and/or in dissolved form. The honeycomb bodies have parallel flow channels running through them. The walls of the flow channels generally have an open pore structure. To coat the channel walls and in particular also the interior surfaces of the pores with the coating suspension, it is proposed that the flow channels be temporarily alternately closed and the coating suspension be forced through the open pore structure of the channel walls. The coating is subsequently dried and calcined. To close the flow channels, it is possible to use thermally or chemically decomposable or soluble compositions which are decomposed or dissolved either during calcination or by means of a subsequent chemical treatment. The coated honeycomb bodies are preferably used for the purification of exhaust gases from automobiles.
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