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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 9352301 B1

PDFFull Text
Date of Patent:
May. 31, 2016

Filed:

Jul. 18, 2013

Exhaust gas purification catalyst, exhaust gas purification monolith catalyst, and method for producing exhaust gas purification catalyst

Applicant:

Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;

Inventors:

Junji Ito, Yokohama, JP;

Yasunari Hanaki, Yokohama, JP;

Tetsuro Naito, Yokohama, JP;

Misaki Akaishi, Yokosuka, JP;

Hironori Wakamatsu, Yokohama, JP;

Assignee:

NISSAN MOTOR CO., LTD., Yokohama-shi, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01J 23/00 (2006.01); B01J 23/02 (2006.01); B01J 23/10 (2006.01); B01J 23/32 (2006.01); B01J 23/40 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/56 (2006.01); B01J 23/58 (2006.01); B01J 23/70 (2006.01); B01J 23/74 (2006.01); B01J 21/04 (2006.01); B01D 53/94 (2006.01); B01J 37/02 (2006.01); B01J 37/04 (2006.01); B01J 35/00 (2006.01); B01J 21/06 (2006.01); B01J 23/745 (2006.01); B01J 23/83 (2006.01); B01J 23/89 (2006.01); B01J 23/34 (2006.01); B01J 35/04 (2006.01); B01J 37/08 (2006.01);
U.S. Cl.
CPC ...
B01J 23/44 (2013.01); B01D 53/94 (2013.01); B01D 53/9413 (2013.01); B01J 21/066 (2013.01); B01J 23/005 (2013.01); B01J 23/10 (2013.01); B01J 23/34 (2013.01); B01J 23/42 (2013.01); B01J 23/745 (2013.01); B01J 23/83 (2013.01); B01J 23/89 (2013.01); B01J 23/894 (2013.01); B01J 23/8946 (2013.01); B01J 35/002 (2013.01); B01J 35/006 (2013.01); B01J 35/0006 (2013.01); B01J 35/0013 (2013.01); B01J 35/04 (2013.01); B01J 37/02 (2013.01); B01J 37/0209 (2013.01); B01J 37/0244 (2013.01); B01J 37/04 (2013.01); B01J 37/08 (2013.01); B01D 2255/204 (2013.01); B01D 2255/2042 (2013.01); B01D 2255/2045 (2013.01); B01D 2255/2063 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2073 (2013.01); B01D 2255/20715 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20746 (2013.01); B01D 2255/20753 (2013.01); B01D 2255/402 (2013.01); B01D 2255/908 (2013.01); B01D 2255/9202 (2013.01); B01J 37/0203 (2013.01); B01J 2523/00 (2013.01);
Abstract

An exhaust gas purification catalyst contains a first catalyst in which an oxide of general formula (1): LaMM'O(where La is lanthanum, M is at least one selected from a group consisting of barium (Ba), strontium (Sr) and calcium (Ca), M′ is at least one selected from a group consisting of iron (Fe), cobalt (Co), nickel (Ni) and manganese (Mn), δ is the amount of oxygen defect, and x and δ satisfy 0<x≦1 and 0≦δ≦1) is supported by an oxide capable of occluding and releasing oxygen, and a second catalyst containing a noble metal. The particle size of the oxide capable of occluding and releasing oxygen is within the range from 1 to 50 nm. The particle size of the oxide of the general formula (1) is within the range from 1 to 30 nm.

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