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:
Dec. 05, 1978
Filed:
May. 31, 1977
Applicant:
Inventors:
William C Carr, Weehawken, NJ (US);
Leon M Polinski, North Plainfield, NJ (US);
Saul G Hindin, Mendham, NJ (US);
James L Kosco, Fanwood, NJ (US);
Assignee:
Engelhard Minerals & Chemicals Corporation, Iselin, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2606 / ; 2606 / ; 2524 / ;
Abstract
Disclosure is made of an improved catalyst and process for producing a near equilibrium mixture of xylenes from a feedstream comprising ethylbenzene and mixed xylenes. The catalyst combines a platinum-containing hydrogenation-dehydrogenation component on an alumina support with a form of hydrogen mordenite having less than about 0.3 equivalents of alkali and alkaline earth metal cations per gram-atom of aluminum and a silica to alumina mol ratio greater than about 9-11 to 1 and less than about 17 to 1.