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:
Oct. 10, 1989
Filed:
Sep. 23, 1988
Joseph P Boyle, Sarnia, CA;
Exxon Research and Engineering Company, Florham Park, NJ (US);
Abstract
Supported iridium-containing hydrocarbon conversion catalyst that are at least partially deactivated due to the deposition of carbonaceous residues thereon during contact with hydrocarbons are reactivated by (1) contacting the catalyst with a gas containing oxygen and a chlorinated compound at a temperature not exceeding about 425.degree. C. to burn a major portion of the carbonaceous residues from the catalyst, (2) contacting the partially carbonaceous residue depleted catalyst with a gas containing a chlorinated compound a temperature of at least about 460.degree. C. to increase the chloride content thereof, (3) contacting the chlorinated catalyst with a gas containing oxygen and a chlorinated compound at a temperature of at least about 460.degree. C. to burn a major portion of the remaining carbonaceous residue from the catalyst, (4) contacting the substantially carbonaceous residue depleted catalyst with a gas containing a chlorinated compound and oxygen at concentrations greater than those used in (3) and at a temperature of at least about 460.degree. C. under essentially stagnant conditions for at least 1 hour, and (5) repeating step (4) at least two additional times to redisperse the agglomerated iridium to a highly active, high surface area state.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile