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. 08, 1994
Filed:
Mar. 30, 1993
Applicant:
Inventors:
Elmer J Hollstein, Wilmington, DE (US);
Chao-Yang Hsu, Media, PA (US);
Assignee:
Sun Company, Inc. (R&M), Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; C07C / ;
U.S. Cl.
CPC ...
502 52 ; 502 38 ; 585750 ;
Abstract
A process for regeneration of spent sulfated and calcined solid superacid catalyst is disclosed. Said process comprises heating said catalyst to a temperature of approximately 450.degree. C. and contacting said catalyst with a gas stream comprising oxygen or air and sulfur dioxide. This regeneration process can be performed in situ.