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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 10913051 B1

PDFFull Text
Date of Patent:
Feb. 09, 2021

Filed:

May. 08, 2018

Ceria-zirconia-based composite oxide and method for producing same, and exhaust gas purification catalyst including ceria-zirconia-based composite oxide

Applicants:

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Cataler Corporation, Kakegawa, JP;

Inventors:

Akira Morikawa, Nagakute, JP;

Kae Konishi, Nagakute, JP;

Toshitaka Tanabe, Nagakute, JP;

Akihiko Suda, Nagakute, JP;

Masahide Miura, Toyota, JP;

Isao Chinzei, Toyota, JP;

Hiromasa Suzuki, Toyota, JP;

Akiya Chiba, Shizuoka, JP;

Kosuke Iizuka, Kakegawa, JP;

Assignees:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;

CATALER CORPORATION, Kakegawa, JP;

Attorney:

Hunton Andrews Kurth LLP

Primary Examiner:

Michael Forrest

Int. Cl.
CPC ...
B01J 23/10 (2006.01); C01G 25/00 (2006.01); C04B 35/488 (2006.01); C04B 35/50 (2006.01); C04B 35/626 (2006.01); B01J 37/16 (2006.01); B01J 23/00 (2006.01); B01J 23/63 (2006.01); B01J 35/00 (2006.01); B01J 35/02 (2006.01); B01J 37/00 (2006.01); B01D 53/94 (2006.01); B01J 37/03 (2006.01); B01J 37/14 (2006.01); B01J 37/12 (2006.01); B01J 37/08 (2006.01);
U.S. Cl.
CPC ...
B01J 23/10 (2013.01); B01D 53/94 (2013.01); B01J 23/002 (2013.01); B01J 23/63 (2013.01); B01J 35/002 (2013.01); B01J 35/023 (2013.01); B01J 37/0009 (2013.01); B01J 37/0063 (2013.01); B01J 37/03 (2013.01); B01J 37/12 (2013.01); B01J 37/14 (2013.01); B01J 37/16 (2013.01); C01G 25/00 (2013.01); C04B 35/488 (2013.01); C04B 35/50 (2013.01); C04B 35/6261 (2013.01); C04B 35/6265 (2013.01); B01D 2255/407 (2013.01); B01D 2255/908 (2013.01); B01D 2255/9202 (2013.01); B01J 37/0036 (2013.01); B01J 37/08 (2013.01); C01P 2002/36 (2013.01); C01P 2002/50 (2013.01); C01P 2002/72 (2013.01); C01P 2006/12 (2013.01); C04B 2235/3229 (2013.01); C04B 2235/3244 (2013.01); C04B 2235/443 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5463 (2013.01); C04B 2235/604 (2013.01); C04B 2235/661 (2013.01); C04B 2235/664 (2013.01); C04B 2235/76 (2013.01); C04B 2235/80 (2013.01);
Abstract

A ceria-zirconia-based composite oxide containing a composite oxide of ceria and zirconia is provided, in which primary particles having a particle diameter of 1.5 to 4.5 μm account for, on a particle number basis, at least 50% of all primary particles in the ceria-zirconia-based composite oxide, and the molar ratio of cerium to zirconium in the ceria-zirconia-based composite oxide is between 43:57 and 55:45.

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