Title:
排ガス浄化床下触媒及び触媒システム
Document Type and Number:
Japanese Patent JP6573711
Kind Code:
B2
Abstract:
An exhaust gas purification underfloor catalyst characterized in comprising a catalyst layer having a lower layer and an upper layer, the lower layer containing alumina and CeO 2 , the noble metal content of the lower layer being at most 0.5 mass% in relation to the mass of the lower layer, the upper layer containing Rh, alumina, and CeO 2 , the amount of noble metals other than Rh contained being 1 mol% or less in relation to the total amount of noble metals contained in the upper layer, the total amount of CeO 2 contained in the lower layer and the upper layer being 14 g/L to 30 g/L, the amount of CeO 2 contained in the upper layer being 7 g/L to 25 g/L, and the amount of CeO 2 contained in the lower layer being 20% or more of the amount of CeO 2 contained in the upper layer.
Inventors:
Hoshino
Shin Sato
Keisuke Murawaki
Shin Sato
Keisuke Murawaki
Application Number:
JP2018504402A
Publication Date:
September 11, 2019
Filing Date:
February 28, 2017
Export Citation:
Assignee:
Cataler Co., Ltd.
International Classes:
B01J23/63; B01D53/94; B01J35/04; F01N3/10; F01N3/28
Domestic Patent References:
| JP2009220100A | ||||
| JP2000502602A | ||||
| JP2015085241A | ||||
| JP2016112489A | ||||
| JP2011125839A |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Nobuo Sekine
Naori Kota
Kazuya Shiokawa
Hideo Katsumata
Shinji Mitsuhashi
Nobuo Sekine
Naori Kota
Kazuya Shiokawa
Hideo Katsumata