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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 11446639 B1

PDFFull Text
Date of Patent:
Sep. 20, 2022

Filed:

Sep. 24, 2019

Exhaust gas purification catalyst, exhaust gas purification method, and production method for exhaust gas purification catalyst

Applicant:

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

Inventors:

Yuji Ogino, Kobe, JP;

Yusuke Haneda, Kobe, JP;

Assignee:

UMICORE SHOKUBAI JAPAN CO., LTD., Tokoname, JP;

Attorney:

Buchanan Ingersoll & Rooney PC

Primary Examiner:

Timothy C Vanoy

Int. Cl.
CPC ...
B01D 53/94 (2006.01); B01J 21/04 (2006.01); B01J 23/63 (2006.01); B01J 35/00 (2006.01); B01J 35/02 (2006.01); B01J 35/10 (2006.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01); C01B 3/26 (2006.01); F01N 3/28 (2006.01);
U.S. Cl.
CPC ...
B01J 23/63 (2013.01); B01D 53/9468 (2013.01); B01J 21/04 (2013.01); B01J 35/0006 (2013.01); B01J 35/023 (2013.01); B01J 35/1014 (2013.01); B01J 35/1019 (2013.01); B01J 37/04 (2013.01); B01J 37/082 (2013.01); C01B 3/26 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/2061 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/20715 (2013.01); B01D 2255/407 (2013.01); B01D 2255/9022 (2013.01); C01B 2203/1005 (2013.01); C01B 2203/1064 (2013.01); F01N 3/2803 (2013.01); F01N 2370/02 (2013.01);
Abstract

An exhaust gas cleaning catalyst is provided with a fire-resistant three-dimensional structural body, a first catalyst layer provide on a first surface side of the fire-resistant three-dimensional structural body, and a second catalyst layer provided on a side of the first catalyst layer opposite to the fire-resistant three-dimensional structural body. The first catalyst layer contains: a complex oxide including cerium and zirconium; and elemental rhodium. The second catalyst layer contains: a complex oxide including cerium and zirconium; and elemental palladium. The amount of cerium included in the second catalyst layer, in terms of cerium dioxide, is 10-25 g per liter of the fire-resistant three-dimensional structural body.

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