Title:
改善された活性挙動を有する触媒
Document Type and Number:
Japanese Patent JP2009525856
Kind Code:
A
Abstract:
In automotive exhaust gas catalysts with a metallic honeycomb composed of corrugated and smooth sheet layers, it is known that the heat capacity and thermal conductivity of the honeycomb can be reduced by perforations in the sheet layers. As a result, the honeycomb heats up more rapidly and the catalytic coating applied on the honeycomb reaches its operating temperature more rapidly. A disadvantage here is the reduction in the support surface area by the perforations in the sheet layers. According to the invention, suitable adjustment of the properties of the coating suspension used for the catalytic coating and of the dimensions of the holes relative to one another allows the holes to be filled permanently with catalyst material. The resulting catalyst has, at the same coating concentration as a catalyst with unperforated sheet layers, a significantly reduced heat capacity and thermal conductivity.
Inventors:
Jürgen Kuwel
Application Number:
JP2008553673A
Publication Date:
July 16, 2009
Filing Date:
February 07, 2007
Export Citation:
Assignee:
Umicore AG & Co.KG
International Classes:
B01J35/04; B01D53/94; B01J23/46; F01N3/28
Domestic Patent References:
| JP2005535454A | 2005-11-24 | |||
| JP2005334757A | 2005-12-08 | |||
| JPH06254413A | 1994-09-13 | |||
| JP2004195295A | 2004-07-15 | |||
| JP2003170063A | 2003-06-17 | |||
| JP2004141711A | 2004-05-20 | |||
| JPH06182224A | 1994-07-05 | |||
| JP2002119868A | 2002-04-23 | |||
| JPS55124544A | 1980-09-25 | |||
| JP2003159534A | 2003-06-03 | |||
| JP2005296819A | 2005-10-27 | |||
| JPH06320014A | 1994-11-22 | |||
| JP2002361092A | 2002-12-17 | |||
| JP2005535454A | 2005-11-24 | |||
| JP2005334757A | 2005-12-08 | |||
| JPH06254413A | 1994-09-13 | |||
| JP2004195295A | 2004-07-15 | |||
| JP2003170063A | 2003-06-17 | |||
| JP2004141711A | 2004-05-20 | |||
| JPH06182224A | 1994-07-05 | |||
| JP2002119868A | 2002-04-23 | |||
| JPS55124544A | 1980-09-25 | |||
| JP2003159534A | 2003-06-03 | |||
| JP2005296819A | 2005-10-27 |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Reinhard Einsel