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:
Jul. 27, 2010
Filed:
May. 04, 2004
Makoto Horiuchi, Himeji, JP;
Masao Hori, Himeji, JP;
Tatsuya Yoshikawa, Himeji, JP;
Atsushi Fukumoto, Akashi, JP;
Takuji Nakane, Himeji, JP;
Makoto Horiuchi, Himeji, JP;
Masao Hori, Himeji, JP;
Tatsuya Yoshikawa, Himeji, JP;
Atsushi Fukumoto, Akashi, JP;
Takuji Nakane, Himeji, JP;
ICT Co., Ltd, Osaka, JP;
International Catalyst Technology, Inc., Auburn Hills, MI (US);
Abstract
A catalyst which purges a diesel engine exhaust gas of HC, CO, and SOF and reduces the emission of particulates as well and a method for the production thereof are provided. The catalyst for purifying a diesel engine exhaust gas has deposited on a refractory three-dimensional structure a catalyst component comprising silica-alumina supporting at least one noble metal selected from the group consisting of platinum, palladium, and rhodium and zeolite. This catalyst is produced by adding a noble metal component into a slurry of silica-alumina thereby inducing chemical adsorption, then adding zeolite to the resultant mixture thereby obtaining a mixed slurry of a noble metal-supporting silica-alumina and zeolite, dipping a refractory three-dimensional structure in the slurry thereby inducing deposition of the catalyst component, and subsequently calcining the resultant composite.