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:
Aug. 01, 2006
Filed:
Mar. 08, 2004
Kazuhiko Koike, Okazaki, JP;
Masakazu Tanaka, Okazaki, JP;
Takumi Suzawa, Okazaki, JP;
Tomomi Hase, Kariya, JP;
Tomohiko Nakanishi, Kariya, JP;
Kazuhiko Koike, Okazaki, JP;
Masakazu Tanaka, Okazaki, JP;
Takumi Suzawa, Okazaki, JP;
Tomomi Hase, Kariya, JP;
Tomohiko Nakanishi, Kariya, JP;
Denso Corporation, Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
This invention provides a method for producing a ceramic catalyst body that can directly support a catalyst on a ceramic support without disposing a coating layer on the ceramic support. In the invention, a catalyst solution containing a catalyst component consisting of a negative complex ion resulting from a catalyst precursor is prepared, and a pH of the catalyst solution is adjusted in such a manner as to satisfy the relation E>Eand E>0 where Eis a surface potential of a matrix phase consisting of a cordierite-W composite body relative to the pH of the catalyst solution and Eis a surface potential of a dispersed phase consisting of compounds other than the cordierite-W composite body. After the ceramic support is brought into contact with the catalyst solution to support the catalyst component, heat-treatment is conducted to bond the matrix phase consisting of the cordierite-W composite body and the catalyst component to support the catalyst on the ceramic support.