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. 03, 2009
Filed:
Nov. 03, 2006
John Scott Buchanan, Lambertville, NJ (US);
Ronald J. Cimini, Friendswood, TX (US);
Robert A. Crane, Lumberton, TX (US);
Wenyih F. Lai, Bridgewater, NJ (US);
Jose G. Santiesteban, Baton Rouge, LA (US);
David A. Stachelczyk, Houston, TX (US);
David L. Stern, Annandale, NJ (US);
Hye-kyung C. Timken, Albany, CA (US);
William A. Weber, Burlington, NJ (US);
John Scott Buchanan, Lambertville, NJ (US);
Ronald J. Cimini, Friendswood, TX (US);
Robert A. Crane, Lumberton, TX (US);
Wenyih F. Lai, Bridgewater, NJ (US);
Jose G. Santiesteban, Baton Rouge, LA (US);
David A. Stachelczyk, Houston, TX (US);
David L. Stern, Annandale, NJ (US);
Hye-Kyung C. Timken, Albany, CA (US);
William A. Weber, Burlington, NJ (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
In a process for converting C+ aromatic hydrocarbons to lighter aromatic products a feed comprising C+ aromatic hydrocarbons is contacted under transalkylation reaction conditions with a catalyst composition comprising (i) a first molecular sieve selected from the group consisting of ZSM-12, mordenite and a porous crystalline inorganic oxide material having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07; and (ii) a second molecular sieve having a constraint index ranging from 3 to 12. At least the first molecular sieve has a hydrogenation component associated therewith and the first and second molecular sieves are contained in the same catalyst bed. The C+ aromatic hydrocarbons are converted under the transalkylation reaction conditions to a reaction product containing xylene.