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:
May. 02, 2006
Filed:
Apr. 04, 2003
Zhicheng HU, Edison, NJ (US);
Knut Wasserman, Edison, NJ (US);
Patrick L. Burk, Freehold, NJ (US);
Youchang Xie, Beijing, CN;
Wei Lin, Beijing, CN;
Zhicheng Hu, Edison, NJ (US);
Knut Wasserman, Edison, NJ (US);
Patrick L. Burk, Freehold, NJ (US);
Youchang Xie, Beijing, CN;
Wei Lin, Beijing, CN;
Engelhard Corporation, Iselin, NJ (US);
Abstract
A support for a catalyst for controlling vehicular exhaust emissions comprising a high surface area refractory metal oxide, e.g., gamma-alumina, having a monomolecular layer of a second oxide selected from the group consisting of titanium dioxide, cerium dioxide and zirconium dioxide. Typically, the monomolecular layer will have a thickness of less than about 10 angstroms. The support may be converted into a vehicular exhaust emission control catalyst by depositing the support on a substrate such as cordierite depositing a precious metal component such as platinum on at least part of the monomolecular layer. Preferably, the catalyst will also contain at least one NOstorage component deposited on at least part of the monomolecular layer. Catalysts prepared using the catalyst supports of the invention exhibit outstanding thermal stability and resistance to sulfur poisoning.