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:
Feb. 24, 2009
Filed:
Mar. 27, 2008
Applicants:
Lubo Zhou, Inverness, IL (US);
Gregory F. Maher, Aurora, IL (US);
James A. Johnson, Clarendon Hills, IL (US);
John E. Bauer, LaGrange Park, IL (US);
Inventors:
Lubo Zhou, Inverness, IL (US);
Gregory F. Maher, Aurora, IL (US);
James A. Johnson, Clarendon Hills, IL (US);
John E. Bauer, LaGrange Park, IL (US);
Assignee:
UOP LLC, Des Plaines, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 5/27 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention is drawn to a process for isomerizing a non-equilibrium mixture of alkylaromatics in two sequential zones, the first zone operating in the absence of hydrogen using a platinum-free catalyst and the second zone using a catalyst comprising a molecular sieve and a platinum-group metal component to obtain an improved yield of para-xylene from the mixture relative to prior art processes.