Title:
EXHAUST GAS PURIFICATION CATALYST DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/230762
Kind Code:
A1
Abstract:
An exhaust gas purification catalyst device having a substrate and one or more catalytic noble metals supported on the substrate. The substrate has a plurality of cells partitioned by a porous wall 1 and includes ceria-zirconia compound oxide particles. A specific noble metal that is one of the one or more catalytic noble metals satisfies both the following requirements (1) and (2): (1) the noble metal 50% support depth for the specific noble metal is 30% or less of the distance from the surface of the porous wall 1 to the center of the interior of the porous wall 1, and (2) the noble metal 90% support depth for the specific noble metal is 35% or more of the distance from the surface of the porous wall 1 to the center of the interior of the porous wall 1.
Inventors:
IWATA KANA (JP)
ITOU MINORU (JP)
OHISHI SHUNSUKE (JP)
YOSHIDA TAKERU (JP)
SUZUKI HIROMASA (JP)
KAKINOHANA MASARU (JP)
KAMITANI SATOSHI (JP)
ITOU MINORU (JP)
OHISHI SHUNSUKE (JP)
YOSHIDA TAKERU (JP)
SUZUKI HIROMASA (JP)
KAKINOHANA MASARU (JP)
KAMITANI SATOSHI (JP)
Application Number:
PCT/JP2020/018856
Publication Date:
November 19, 2020
Filing Date:
May 11, 2020
Export Citation:
Assignee:
CATALER CORP (JP)
TOYOTA MOTOR CO LTD (JP)
TOYOTA MOTOR CO LTD (JP)
International Classes:
B01J35/04; B01D53/86; B01D53/94; B01J23/63; F01N3/10; F01N3/28
Domestic Patent References:
| WO2018159214A1 | 2018-09-07 |
Foreign References:
| JP2019058870A | 2019-04-18 | |||
| JP2009255032A | 2009-11-05 | |||
| JP2016513014A | 2016-05-12 | |||
| JP2020082070A | 2020-06-04 | |||
| JP2015085241A | 2015-05-07 | |||
| JP2015077543A | 2015-04-23 | |||
| JP2008302304A | 2008-12-18 |
Other References:
See also references of EP 3970855A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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