| abstract |
The invention relates to a process for activating a supported acid catalyst, by transformation of acid sites of Lewis acid type, deposited on the solid support, into activated acid sites, in an acidic and non-oxidizing medium. According to the invention, the catalyst is subjected to an activation phase in a medium containing a hydrohalic acid or a precursor of hydrohalic acid, in the presence of at least one hydrocarbon or a hydrocarbon derivative, preferably paraffinic, at a temperature greater than 20 deg.C and, preferably, between 100 deg.C and 250 deg.C, at a pressure between 10 ** 5 and 50.10 ** 6 Pa, for a period sufficient to obtain the transformation into acidic sites. |