Ozone regeneration of platinum, and polymetallic platinum reforming catalysts
AssigneeExxon Research & Engineering Co.
InventorJoseph P. Boyle
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Abstract
A process for the regeneration of a coked platinum, or polymetallic platinum reforming catalyst with ozone. The coked catalyst is contacted, and carbon burned from the catalyst at temperatures ranging from about 20.degree. C. to 200.degree. C., preferably about 60.degree. C. to 150.degree. C., with a gaseous stream containing ozone in concentration ranging from about 1 to 50 volume percent ozone sufficient to substantially deplete said catalyst of sufficient carbon to restore the activity of the catalyst to that of the corresponding fresh catalyst.
Claims6
A process for the regeneration of a coked platinum-alumina, or polymetallic-platinum alumina reforming catalyst, which comprises contacting said catalyst with a gaseous stream of ozone in air, said stream containing from about 1 percent to about 50 percent ozone, based on the volume of the gas, at temperature ranging from about 60.degree. C. to about 120.degree. C. and at a space velocity of from about 50 to about 200 standard cubic feet per hour per pound of catalyst sufficient to burn and substantially deplete said catalyst of sufficient carbon to restore the activity of the catalyst to substantially that of the corresponding fresh catalyst.
Dependencies are inferred from the claim text.