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.:
Date of Patent:
Feb. 10, 2015
Filed:
Nov. 18, 2011
Applicants:
Takeshi Yoshii, Nisshin, JP;
Tomohiko Nakanishi, Kariya, JP;
Inventors:
Takeshi Yoshii, Nisshin, JP;
Tomohiko Nakanishi, Kariya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 21/00 (2006.01); B01J 23/00 (2006.01); B01J 25/00 (2006.01); B01J 29/00 (2006.01); B01J 23/10 (2006.01); C01B 13/18 (2006.01); C01B 13/14 (2006.01); C01G 45/12 (2006.01); C01G 49/00 (2006.01); C01G 51/00 (2006.01); B01J 37/24 (2006.01); B01J 23/889 (2006.01); B01J 23/83 (2006.01); B01J 35/10 (2006.01); B01J 37/22 (2006.01);
U.S. Cl.
CPC ...
C01B 13/185 (2013.01); C01B 13/14 (2013.01); C01G 45/1264 (2013.01); C01G 49/0054 (2013.01); C01G 51/68 (2013.01); B01J 37/24 (2013.01); B01J 23/8892 (2013.01); B01J 23/002 (2013.01); B01J 23/83 (2013.01); B01J 35/1009 (2013.01); B01J 35/1014 (2013.01); B01J 35/1038 (2013.01); C01P 2002/72 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01); C01P 2002/34 (2013.01); B01J 37/22 (2013.01);
Abstract
A method of manufacturing a perovskite catalyst composed of perovskite oxide includes mixing step, firing step and acid-treating step. In the mixing step, an A-site material and a B-site material are mixed at a stoichiometric ratio such that the A-site is increased, compared to that of a theoretical composition ABOof perovskite oxide in which a ratio of A-site and B-site is 1:1. In the firing step, the obtained mixed powder is fired. In the acid-treating step, the obtained fired powder is acid-treated with acid of pH 2 or more and less than pH 7.