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:
Sep. 30, 2014
Filed:
Mar. 08, 2011
Yuying Shu, Ellicott City, MD (US);
Richard F. Wormsbecher, Dayton, MD (US);
Wu-cheng Cheng, Ellicott City, MD (US);
Yuying Shu, Ellicott City, MD (US);
Richard F. Wormsbecher, Dayton, MD (US);
Wu-Cheng Cheng, Ellicott City, MD (US);
W. R. Grace & Co.-Conn., Columbia, MD (US);
Abstract
Catalytic cracking catalyst compositions and processes for cracking hydrocarbons to maximize light olefins production are disclosed. Catalyst compositions comprise at least one zeolite having catalytic cracking activity under catalytic cracking conditions, preferably Y-type zeolite, which zeolite has low amounts of yttrium in specified ratios to rare earth metals exchanged on the zeolite. Catalyst and processes of the invention provide increased yields of light olefins and gasoline olefins during a FCC process as compared to conventional lanthanum containing Y-type zeolite FCC catalysts.