Title:
EXHAUST GAS PURIFICATION CATALYST DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/163403
Kind Code:
A1
Abstract:
This exhaust gas purification catalyst device 100 comprises an upper layer 10 which includes first carrier particles and rhodium, and a lower layer 20 which includes second carrier particles, and the upper layer 10 comprises a rhodium enriched area 11 in the range a, from the upstream end in the exhaust gas flow to 50% of the upper layer length, and a range b from the upper layer top surface to 18 μm in the depth direction. The rhodium enriched area 11 contains at least 50% and less than 100% of all the rhodium in the upper layer 10.
Inventors:
OHISHI SHUNSUKE (JP)
OTA TAKAYA (JP)
CHINZEI ISAO (JP)
SUZUKI HIROMASA (JP)
SAITO YOSHINORI (JP)
NAKAHIGASHI SEIJI (JP)
OTA TAKAYA (JP)
CHINZEI ISAO (JP)
SUZUKI HIROMASA (JP)
SAITO YOSHINORI (JP)
NAKAHIGASHI SEIJI (JP)
Application Number:
PCT/JP2019/002561
Publication Date:
August 29, 2019
Filing Date:
January 25, 2019
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; B01J27/053; B01J37/02; F01N3/10; F01N3/20; F01N3/28
Domestic Patent References:
| WO2006057067A1 | 2006-06-01 | |||
| WO2008091004A1 | 2008-07-31 | |||
| WO2017056067A1 | 2017-04-06 |
Foreign References:
| JP2015073943A | 2015-04-20 | |||
| JPH05154382A | 1993-06-22 | |||
| JPS5712820A | 1982-01-22 | |||
| JP2001252565A | 2001-09-18 | |||
| JP2017200675A | 2017-11-09 | |||
| JPH076017A | 1995-01-10 | |||
| JP2011255378A | 2011-12-22 | |||
| JP2008302304A | 2008-12-18 | |||
| JP2015085241A | 2015-05-07 |
Other References:
See also references of EP 3756759A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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