发明授权
- 专利标题： Catalyst featuring silicone dioxide based support material for the purification of exhaust gases
- 专利标题（中）： 催化剂采用基于二氧化硅的支撑材料，用于净化废气
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申请号： US10486148申请日： 2002-08-08
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公开(公告)号： US07563744B2公开(公告)日： 2009-07-21
- 发明人: Harald Klein , Ulrich Neuhausen , Egbert Lox , Jürgen Gieshoff , Thomas Kreuzer
- 申请人： Harald Klein , Ulrich Neuhausen , Egbert Lox , Jürgen Gieshoff , 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
- 代理商 William D. Schmidt
- 优先权： EP01119213 20010809
- 国际申请： PCT/EP02/08890 WO 20020808
- 国际公布： WO03/024589 WO 20030327
- 主分类号： B01J23/00
- IPC分类号： B01J23/00 ; B01J21/00 ; B01J29/00 ; B01J20/00
摘要：
The present invention relates to a catalyst for the purification of exhaust gases from an internal combustion engine, which comprises a catalytically active coating on an inert ceramic or metal honeycomb body, said coating comprising at least one platinum group metal selected from the group consisting of platinum, palladium, rhodium and iridium on a fine, oxidic support material. As an oxidic support material, the catalyst comprises a low-porosity material on the basis of silicon dioxide that comprises aggregates of essentially spherical primary particles having an average particle diameter of between 7 and 60 nm.