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:
May. 16, 1989
Filed:
Jul. 16, 1987
Georges Szabo, Montivilliers, FR;
Francois-Xavier Cormerais, Montivilliers, FR;
Compagnie De Raffinage Et De Distribution Total France, Levallois-Perret, FR;
Abstract
Catalysts for the isomerization of hydrocarbons, particularly normal paraffins having from 4 to 7 carbon atoms, as well as a process for the preparation of the catalyst and a process for their use in the isomerization of such hydrocarbons are disclosed. The catalysts are composed of a zeolite support impregnated with a mixture of zirconium, a refractory metallic oxide and at least one platinum-group metal. The process for the preparation of the catalysts involves steps of depositing the zirconium, on the zeolite support, mixing (zeolite+Zr) with alumina, and depositing a platinum group metal on the mixture (zeolite+Zr)/alumina, accompanied by intermediate calcining and shaping steps, and followed by drying and final calcining steps. Alternative methods for depositing the zirconium and platinum group metals on the zeolite are disclosed.