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 10130934 B1

Date of Patent:

Nov. 20, 2018

Filed:

Oct. 18, 2017

Exhaust gas purifying catalyst and method for producing the same

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;

Inventor:

Takaaki Kanazawa, Toyota, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Haytham Soliman

Int. Cl.

CPC ...

B01J 23/00 (2006.01); B01J 23/10 (2006.01); B01J 23/42 (2006.01); B01J 35/10 (2006.01); B01J 35/00 (2006.01); B01D 53/94 (2006.01); B01J 37/02 (2006.01); B01J 37/03 (2006.01); B01J 37/08 (2006.01); B01J 21/04 (2006.01); B01J 21/06 (2006.01); B01J 23/63 (2006.01); B01J 35/02 (2006.01); B01J 37/00 (2006.01); B01J 37/04 (2006.01);

U.S. Cl.

CPC ...

B01J 23/10 (2013.01); B01D 53/94 (2013.01); B01D 53/945 (2013.01); B01J 21/04 (2013.01); B01J 21/066 (2013.01); B01J 23/42 (2013.01); B01J 23/63 (2013.01); B01J 35/0006 (2013.01); B01J 35/006 (2013.01); B01J 35/0026 (2013.01); B01J 35/026 (2013.01); B01J 35/1014 (2013.01); B01J 35/1019 (2013.01); B01J 35/1061 (2013.01); B01J 37/009 (2013.01); B01J 37/0238 (2013.01); B01J 37/031 (2013.01); B01J 37/04 (2013.01); B01J 37/088 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/407 (2013.01); B01D 2255/908 (2013.01); Y02T 10/22 (2013.01);

Abstract

Provided is an exhaust gas purifying catalyst with an excellent effect of suppressing deterioration due to aggregation of a noble metal catalyst that would occur during endurance at a high temperature. The exhaust gas purifying catalyst includes a porous support and a noble metal catalyst carried on the porous support. The porous support contains particles of an alumina-ceria-zirconia composite oxide, and the porous support has the following physical property values after subjected to baking at 900° C. for 5 hours: a pore diameter of the particles in the range of 2 to 20 nm, a specific surface area of the particles in the range of 75 to 115 m/g, a crystallite size of a ceria-zirconia composite oxide that is contained in the particles in the range of 4 to 6 nm, and a bulk density of the particles in the range of 0.5 to 0.9 cm/g.

Find Patent Forward Citations