Title:
EXHAUST GAS PURIFICATION CATALYST FOR SADDLE RIDING-TYPE VEHICLE
Document Type and Number:
WIPO Patent Application WO/2022/131244
Kind Code:
A1
Abstract:
The present invention provides an exhaust gas purification catalyst which is for a saddle riding-type vehicle, has a simple and low-cost structure in which only a singled layered catalyst layer is provided, and has excellent purification performance for CO, HC, and NOx and excellent low-temperature purification performance for the same. The exhaust gas purification catalyst, which is for a saddle riding-type vehicle and is provided in an exhaust gas passage of an internal combustion engine, comprises a metal substrate and a single-layered catalyst layer provided on the metal substrate, wherein the catalyst layer contains: first composite catalyst particles having at least zirconia-based host particles and Rh and CeO2 particles co-supported on the surface of the zirconia-based host particles; second composite catalyst particles having alumina host particles and Pd supported on the surface of the alumina host particles; and/or third composite catalyst particles having ceria alumina host particles and Pd supported on the surface of the ceria alumina host particles.
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Inventors:
NAGASHIMA KEN (JP)
Application Number:
PCT/JP2021/045998
Publication Date:
June 23, 2022
Filing Date:
December 14, 2021
Export Citation:
Assignee:
N E CHEMCAT CORP (JP)
International Classes:
B01D53/94; B01J23/63; F01N3/10; F01N3/24; F01N3/28
Foreign References:
| JP2016179466A | 2016-10-13 | |||
| JP2016179427A | 2016-10-13 | |||
| JPH0243951A | 1990-02-14 | |||
| JP2010058069A | 2010-03-18 | |||
| JP2013208578A | 2013-10-10 | |||
| JP2011020013A | 2011-02-03 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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