Process for the activation of halogenated catalysts, catalysts obtained by this process and application of these catalysts in hydrocarbon conversion processes

摘要

A process for the preparation and activation of a catalyst, comprising a stage of manufacture of a support consisting at least partially of at least one refractory inorganic oxide, a stage of deposition on the said support of at least one metal of the platinum lode, and a stage intended for the formation on the support of at least two metal halides of the Lewis acid type. …??According to the invention, between the deposition of the said metal halides of the Lewis acid type and the use of the catalyst in the reactor, the catalyst is subjected to an activation stage by being maintained in an acidic and nonoxidising or reducing medium at a temperature of between 300 and 475 DEG C so that its final content of promoting metal of the zirconium, molybdenum, tungsten or titanium type is between 0.15 and 1% relative to the weight of the support.