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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.:

US 8808653 B1

PDFFull Text
Date of Patent:
Aug. 19, 2014

Filed:

Mar. 04, 2010

Catalyst for purifying exhaust gas

Applicants:

Kosuke Mikita, Himeji, JP;

Takahiro Ikegami, Himeji, JP;

Masanori Ikeda, Himeji, JP;

Hideki Goto, Himeji, JP;

Inventors:

Kosuke Mikita, Himeji, JP;

Takahiro Ikegami, Himeji, JP;

Masanori Ikeda, Himeji, JP;

Hideki Goto, Himeji, JP;

Assignees:

Umicore Shokubai Japan Co., Ltd., Tokyo, JP;

Umicore Shokubai USA Inc., Auburn Hills, MI (US);

Attorney:

Cesari and McKenna, LLP

Primary Examiner:

Anthony J Zimmer

Int. Cl.
CPC ...
B01D 53/56 (2006.01); B01D 53/94 (2006.01); B01J 8/02 (2006.01); C01B 21/00 (2006.01); C01B 23/00 (2006.01); C01B 25/00 (2006.01); C01B 31/00 (2006.01); C01B 33/00 (2006.01); C01B 35/00 (2006.01); C01G 28/00 (2006.01); C01G 30/00 (2006.01); B01J 23/00 (2006.01); B01J 23/10 (2006.01); B01J 23/40 (2006.01); B01J 23/42 (2006.01); B01J 23/70 (2006.01); B01J 23/74 (2006.01); B01J 23/83 (2006.01); B01J 37/02 (2006.01); F01N 3/10 (2006.01); F01N 3/08 (2006.01); B01J 23/89 (2006.01);
U.S. Cl.
CPC ...
B01D 53/945 (2013.01); B01D 2255/20715 (2013.01); B01D 2255/908 (2013.01); B01D 2255/2042 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/9022 (2013.01); F01N 2370/02 (2013.01); B01D 2255/20738 (2013.01); B01J 2523/00 (2013.01); B01J 23/83 (2013.01); B01D 2255/1025 (2013.01); B01J 37/0244 (2013.01); B01D 2255/407 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2063 (2013.01); B01D 2255/2061 (2013.01); F01N 3/101 (2013.01); F01N 3/0864 (2013.01); B01J 23/002 (2013.01); B01J 23/894 (2013.01); Y02T 10/22 (2013.01);
Abstract

PROBLEM The present invention is directed to provide a catalyst for purifying exhaust gas capable of maintaining a superior catalytic performance even when the catalyst is exposed to an exhaust gas at a high temperature of 800° C. or higher. SOLUTION The catalyst for purifying exhaust gas of the present invention comprises a catalytically active component containing a noble metal and a promoter containing an oxygen storage material both being supported on a carrier. The oxygen storage material comprises cerium, zirconium, and iron, and content of iron in the oxygen storage material is 0.01% by mass or more and less than 0.70% by mass (FeOconversion) relative to the total mass of the oxygen storage material. And the oxygen storage material is (a) a complex oxide or a solid solution of iron and a metal comprising cerium and zirconium; or (b) an iron is supported on a complex oxide or a solid solution of a metal comprising cerium and zirconium.

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