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. 26, 2000
Filed:
Apr. 10, 1997
Applicant:
Inventors:
Alan W Peters, Highland, MD (US);
Edward F Rakiewicz, Sykesville, MD (US);
Gordon Dean Weatherbee, Columbia, MD (US);
Xinjin Zhao, Columbia, MD (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
502330 ; 502304 ; 502327 ; 502333 ; 502344 ;
Abstract
Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) palladium promote CO combustion in FCC processes while minimizing the formation of NO.sub.x. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide.