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:
Nov. 17, 1998
Filed:
Jan. 16, 1996
Christopher D Gosling, Roselle, IL (US);
Paul G Blommel, Bolingbrook, IL (US);
Michelle J Cohn, Mount Prospect, IL (US);
Ralph D Gillespie, Gurnee, IL (US);
Jennifer S Holmgren, Bloomingdale, IL (US);
UOP LLC, Des Plaines, IL (US);
Abstract
A method of continuously promoting the activity of solid strong acid catalysts used in acid catalyzed reactions by adding or generating water in the reaction mixture has been developed. The solid strong acid catalyst may be a sulfated metal oxide, a tungstated metal oxide, or a molybdated metal oxide. The metal oxides are oxides, hydroxides, oxyhydroxides, or oxide-hydrates of Group IV-A, Group III-A, Group III-B, and Group V-A metals. The catalyst may also contain a Group VIII metal, or when the metal oxide is a hydroxide, oxide, oxyhydroxide, or oxide-hydrate of the Group IV-A, Group III-A, or Group III-B metals, the catalyst may also contain an oxide, hydroxide, oxyhydroxide or oxide-hydrate of a Group V-A, Group V-B, Group VI-B, or Group VII-B metal as a promoter. The acid catalyzed reactions where the activity promotion method may be applied include catalytic cracking, catalytic reforming, hydrodesulfurization, isomerization, alkylation of aliphatic and aromatic hydrocarbons, polymerization, and oligomerization. The amount of water added to or generated in the reaction mixture may be from about 0.1 ppm to about 500 ppm water.