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:
Apr. 15, 1987
Jean-Pierre Franck, Bougival, FR;
Jean-Paul Bournonville, Cergy Pontoise, FR;
Maurice Berthelin, St. Symphorien D'Ozon, FR;
Institut Francais du Petrole, Rueil-Malmaison, FR;
Abstract
A catalytic reforming process using catalysts containing a carrier, platinum, rhenium and optionally at least one metal selected from the group consisting of tin, germanium, lead, indium, thallium and titanium, arranged in several successive catalyst beds wherein the catalyst of the first bed has a Re/Pt ratio higher than the Re/Pt ratio of the catalyst used in the last bed, said catalyst of the last bed containing at least 0.08% of rhenium in proportion to the carrier. The catalysts preferably contain at least one halogen in an amount, expressed in proportion to the carrier, from 0.1 to 15%, said carrier preferably consisting mainly of alumina. In a preferred embodiment 3 successive catalyst beds are used wherein the Re/Pt ratios are, as a whole, decreasing from the first bed to the last bed.