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:
Oct. 31, 2006
Filed:
Feb. 12, 2003
Miho Ito, Aichi-pref., JP;
Jun Hasegawa, Hekinan, JP;
Tosiharu Kondo, Toyoake, JP;
Tomohiko Nakanishi, Kariya, JP;
Miho Ito, Aichi-pref., JP;
Jun Hasegawa, Hekinan, JP;
Tosiharu Kondo, Toyoake, JP;
Tomohiko Nakanishi, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
This invention aims at providing a catalyst body exhibiting a lower degradation of a catalyst due to thermal durability and capable of keeping higher catalyst performance for a long time. A catalyst component such as Pt is directly supported by Zr, W, etc, replacing elements inside a support such as Al of cordierite to provide a catalyst body without forming a coating layer. A combination of the catalyst component and the element inside the support is selected so that support strength is greater than 5 eV by simulation using a density functional method. Coarsening of catalyst particles can be suppressed and a high-performance catalyst body excellent in thermal durability can be obtained.