The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2011
Filed:
Feb. 12, 2008
Kenji Suzuki, Hiroshima, JP;
Koichiro Harada, Hiroshima, JP;
Hiroshi Yamada, Hiroshima, JP;
Kenji Okamoto, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Kenji Suzuki, Hiroshima, JP;
Koichiro Harada, Hiroshima, JP;
Hiroshi Yamada, Hiroshima, JP;
Kenji Okamoto, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
Disclosed is a catalytic material for purifying an exhaust gas component. The catalytic material comprises a composite oxide which contains, as essential components, zirconium (Zr) and neodymium (Nd), and further contains a rare-earth metal R other than cerium (Ce) and neodymium (Nd), wherein each of the zirconium, neodymium and rare-earth metal R constituting the composite oxide is contained, in the form of oxide, in such a manner that a ratio of NdO/(ZrO+NdO+RO) is 3 mol % or more, and a ratio of (NdO+RO)/(ZrO+NdO+RO) is 33 mol % or less. The catalytic material of the present invention can oxidize/burn PM in a short period of time, while suppressing CO emission during the burning of the PM, and can achieve further enhanced NOx conversion performance.