| abstract |
Method for activating catalysts chosen from zeolites with a high silica content, organosilicates, crystalline polymorphic silicas and zeolites deactivated by steam treatment, in which a catalyst of this type is heat treated using aluminum chloride and a hydrohalic acid.n n n According to the invention, aluminum chloride and hydrochloric acid, both in the gaseous phase, are made to act on the catalyst, at a temperature between approximately 150 and 600 ° C. in the same reactor and the excess is eliminated. possible gaseous hydrochloric acid using an inert gas. |