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. 05, 2008
Filed:
Aug. 15, 2003
Jean W. Beeckman, Columbia, MD (US);
William G. Borghard, Haddon Heights, NJ (US);
Arthur W. Chester, Cherry Hill, NJ (US);
Robert A. Crane, Lumberton, TX (US);
Owen C. Feeley, Lebanon, NJ (US);
John C. Fried, Easton, PA (US);
Dominick N. Mazzone, Wenonah, NJ (US);
Glenn R. Sweeten, Raubsville, PA (US);
Jean W. Beeckman, Columbia, MD (US);
William G. Borghard, Haddon Heights, NJ (US);
Arthur W. Chester, Cherry Hill, NJ (US);
Robert A. Crane, Lumberton, TX (US);
Owen C. Feeley, Lebanon, NJ (US);
John C. Fried, Easton, PA (US);
Dominick N. Mazzone, Wenonah, NJ (US);
Glenn R. Sweeten, Raubsville, PA (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
In a process for preparing a selectivated catalyst composition useful in the disproportionation of toluene, a catalyst comprising an acidic molecular sieve is contacted with a boron compound at a temperature in excess of 500° C.; and the resultant catalyst is then contacted with a medium containing hydrogen ions to at least partially restore the acid activity of the molecular sieve.