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:
Aug. 25, 2015
Filed:
Aug. 17, 2012
Applicants:
Shogo Shirakawa, Gotenba, JP;
Naoto Nagata, Susono, JP;
Kimiyasu Ono, Susono, JP;
Inventors:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01J 23/58 (2006.01); B01J 23/52 (2006.01); B01D 53/94 (2006.01); B01J 35/00 (2006.01); B01J 23/46 (2006.01); B01J 37/16 (2006.01); B01J 23/66 (2006.01); F01N 3/10 (2006.01);
U.S. Cl.
CPC ...
B01J 23/52 (2013.01); B01D 53/9413 (2013.01); B01J 23/464 (2013.01); B01J 23/66 (2013.01); B01J 35/002 (2013.01); B01J 35/006 (2013.01); B01J 35/0006 (2013.01); B01J 37/16 (2013.01); B01D 2255/106 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/9202 (2013.01); B01D 2258/012 (2013.01); B01J 35/008 (2013.01); F01N 3/10 (2013.01);
Abstract
The purpose of the present invention is to provide an exhaust gas purification catalyst which can decrease a NOx reduction temperature and comprises rhodium and gold. An exhaust gas purification catalyst which carries two-element microparticles each comprising rhodium and gold, said catalyst being characterized in that the rhodium and the gold are phase-separated from each other and the content ratio of the rhodium to the gold (i.e., rhodium:gold) is (30-99.9 at. %):(70-0.1 at. %) in the two-element microparticles.