Title:
Exhaust gas purification catalyst
Document Type and Number:
Japanese Patent JP5940992
Kind Code:
B2
Abstract:
The subject of the present invention is to provide a novel exhaust purification catalyst. The catalyst has the following composition: a catalystic layer which is composed of at least two layers enables a Pd to be loaded on a lower-layer side, and can further improve the oxidative activity of Co. The solution of the invention is to provide an exhaust purification catalyst. The exhaust purification catalyst is composed of a catalytic layer A and a catalytic layer B on the substrate. The catalytic layer A contains Pd and OSC materials and an inorganic porous body. The catalytic layer B contains Pt and/or Rh and an inorganic porous body, and is arranged on the upper-layer side of the catalytic layer A. the exhaust purification catalyst is characterized in that the catalytic layer A contains one or two more transition metals selected from a group of Co, Ni, Mn, Cu and Fe.
Inventors:
Takahiro Sato
Takeshi Nabemoto
Daigo Ohno
Noriaki Iwata
Takeshi Nabemoto
Daigo Ohno
Noriaki Iwata
Application Number:
JP2013014477A
Publication Date:
June 29, 2016
Filing Date:
January 29, 2013
Export Citation:
Assignee:
Mitsui Mining & Smelting Co., Ltd.
International Classes:
B01J23/89; B01D53/94; B01J23/656; F01N3/10; F01N3/28
Domestic Patent References:
| JP2000093799A | ||||
| JP8290063A | ||||
| JP2007326001A | ||||
| JP2006187675A |
Attorney, Agent or Firm:
Takeuchi/Ichizawa International Patent Office
Previous Patent: A liner, its manufacturing method, and a high pressure gas tank
Next Patent: ARCHIMEDEAN SCREW
Next Patent: ARCHIMEDEAN SCREW