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:
Dec. 30, 2014
Filed:
Nov. 25, 2010
Naotaka Ohtake, Anan, JP;
Kazuhiko Yokota, Shanghai, CN;
Naotaka Ohtake, Anan, JP;
Kazuhiko Yokota, Shanghai, CN;
Anan Kasei Co., Ltd., Tokushima, JP;
Abstract
Disclosed are a silicon-containing cerium composite oxide which is capable of maintaining a large specific surface area even used in a high temperature environment, and which has excellent heat resistance and reducibility, as well as a method for producing the composite oxide and a catalyst for exhaust gas purification employing the composite oxide. The composite oxide contains 2 to 20 mass % silicon in terms of SiO, has properties of exhibiting a specific surface area of not less than 40 m/g as measured by the BET method after calcination at 1000° C. for 5 hours, and a reducibility of not lower than 30% as calculated from measurement of temperature-programmed reduction from 50° C. to 900° C. after calcination at 1000° C. for 5 hours, and is suitable for a co-catalyst for a catalyst for exhaust gas purification.