Title:
EXHAUST GAS PURIFICATION CATALYST, PRODUCTION METHOD OF THE SAME AND EXHAUST GAS PURIFICATION METHOD USING THE SAME
Document Type and Number:
Japanese Patent JP2016010798
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst which exerts a sufficient oxidation activity on e.g. carbon monoxide, hydrocarbons and nitrogen monoxide even at low temperatures.SOLUTION: An exhaust gas purification catalyst includes an alumina support, a silica layer formed on the surface of the alumina support and active metal particles composed of platinum and palladium supported in the silica layer. The ratio of fine particles of particle sizes of 2.0 nm or smaller in active metal particles is 50% or higher, in terms of the number of particles, relative to all active metal particles, and the ratio of alloy fine particles of a palladium content of 10-90 at% in the fine particles is 50%, in terms of the number of particles, relative to all fine particles.
Inventors:
HIROSE TAKUTO
YAMAZAKI KIYOSHI
NIINA YUSUKE
SOFUE YUICHI
YAMAZAKI KIYOSHI
NIINA YUSUKE
SOFUE YUICHI
Application Number:
JP2015110582A
Publication Date:
January 21, 2016
Filing Date:
May 29, 2015
Export Citation:
Assignee:
TOYOTA CENTRAL RES & DEV
TOYOTA MOTOR CORP
TOYOTA MOTOR CORP
International Classes:
B01J23/44; B01D53/86; B01J32/00; B01J37/08; F01N3/10
Domestic Patent References:
| JPH1119521A | 1999-01-26 | |||
| JP2010194384A | 2010-09-09 | |||
| JP2013220377A | 2013-10-28 | |||
| JP2009172522A | 2009-08-06 | |||
| JP2000026108A | 2000-01-25 |
Attorney, Agent or Firm:
Patent Business Corporation St. Crest International Patent Office
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