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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 9067193 B1

PDFFull Text
Date of Patent:
Jun. 30, 2015

Filed:

Dec. 18, 2012

Exhaust gas purifying catalyst and method for producing same

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;

Inventors:

Satoshi Nagao, Gotenba, JP;

Rui Imoto, Susono, JP;

Daichi Sato, Susono, JP;

Yusaku Inatomi, Gotenba, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Patricia L Hailey

Int. Cl.
CPC ...
B01J 27/14 (2006.01); B01J 27/16 (2006.01); B01J 27/18 (2006.01); B01J 37/00 (2006.01); B01D 53/56 (2006.01); B01D 53/86 (2006.01); B01D 53/94 (2006.01); B01J 27/185 (2006.01); B01J 37/03 (2006.01); B01J 37/08 (2006.01); B01J 32/00 (2006.01); B01J 35/10 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/46 (2006.01);
U.S. Cl.
CPC ...
B01J 27/1856 (2013.01); B01J 37/03 (2013.01); B01J 37/08 (2013.01); B01J 27/185 (2013.01); B01J 32/00 (2013.01); B01J 35/10 (2013.01); B01D 53/945 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/2092 (2013.01); Y02T 10/22 (2013.01); B01J 23/42 (2013.01); B01J 23/44 (2013.01); B01J 23/464 (2013.01); B01J 27/16 (2013.01); B01J 35/1061 (2013.01); B01J 35/1066 (2013.01); B01J 35/109 (2013.01);
Abstract

An exhaust gas purifying catalyst, which is obtained by having at least one platinum group metal selected from the group consisting of Pt, Rh, and Pd supported on a calcined aluminum phosphate body. The calcined aluminum phosphate body has a tridymite crystal structure and the ratio of the cumulative pore distribution of pores having a size of 10 nm or less to the cumulative pore distribution of pores having a size of 300 nm or less is 20% or more in the calcined aluminum phosphate body. A method for producing an exhaust gas purifying catalyst including calcining aluminum phosphate, which has been obtained from an aqueous solution that is controlled to have a pH within a predetermined range, at a predetermined temperature for a predetermined period of time, thereby obtaining a calcined aluminum phosphate body; and having at least one platinum group metal selected from the group consisting of Pt, Rh, and Pd supported on the calcined aluminum phosphate body.

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