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. 02, 1988
Filed:
May. 18, 1987
Kevin P Menard, Big Spring, TX (US);
Eugene W Cotten, Jr, Beaumont, TX (US);
Cosden Technology, Inc., Dallas, TX (US);
Abstract
A process for the disproportionation of a toluene containing feedstock over an aluminum deficient mordenite catalyst having a silica/alumina mole ratio of at least 30. The feedstock and hydrogen co-feed are supplied to a reaction zone containing the mordenite catalyst and which is operated under a temperature and pressure condition to effect the disproportionation of toluene to benzene and xylene. The supply of toluene feedstock to the reaction zone is interrupted while continuing the supply of hydrogen to the reaction zone. By continuing the supply of hydrogen to the reaction zone during periods of interruption of the toluene feedstock, the aging quality of the aluminum-deficient mordenite catalyst is improved.