METHOD FOR REGENERATING A GROUP VIII NOBEL METAL DEACTIVATED CATALYST

摘要

A method for regenerating a Group VIII noble metal catalystwhich has been contaminated with coke during a reforming process. Themethod comprises (a) burning off the coke from the catalyst, (b)redispersing the noble metal on the surface of the catalyst support bycontacting the catalyst with halogen gas and carbon dioxide and (c)chemically reducing the catalyst. The presence of carbon dioxide inthe redispersing step improves the activity of the regeneratedcatalyst.