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:
Nov. 20, 2007
Filed:
Sep. 14, 2005
Paula L. Bogdan, Mount Prospect, IL (US);
James E. Rekoske, Glenview, IL (US);
Robert B. Larson, Chicago, IL (US);
Patrick C. Whitchurch, Villa Park, IL (US);
John E. Bauer, LaGrange Park, IL (US);
Michael H. Quick, Arlington Heights, IL (US);
Paula L. Bogdan, Mount Prospect, IL (US);
James E. Rekoske, Glenview, IL (US);
Robert B. Larson, Chicago, IL (US);
Patrick C. Whitchurch, Villa Park, IL (US);
John E. Bauer, LaGrange Park, IL (US);
Michael H. Quick, Arlington Heights, IL (US);
UOP LLC, Des Plaines, IL (US);
Abstract
Reduced co-production of toluene and Cand higher aromatics such as trimethylbenzene, methylethylbenzene, and diethylbenzene is achieved in processes for the isomerization of xylenes to close to equilibrium using a layered catalyst having a thin outer layer of molecular sieve and hydrogenation metal component on a core, wherein at least about 75 mass-% of the hydrogenation metal component is in the outer layer.