Process for the isomerization of olefins on metallic catalysts, impregnated with organic sulfur compounds before loading into the reactor.

摘要

Process for the isomerisation of relatively unsubstituted external olefins to more substituted external olefins and/or internal olefins, in the absence of diolefins, in the presence of a catalyst based on palladium deposited on a support, the said catalyst being, before it is charged into the reactor, treated with at least one sulphur compound diluted in a solvent, and then activated under neutral or reducing atmosphere between 20 and 300 DEG C, 1 and 50 bars and with an HSV of 50 to 600 h<-1>. The catalyst containing 0.05 to 10 % of sulphur (by weight) is brought into contact with the feedstock and hydrogen between 20 and 200 DEG C, 1 and 50 bars, an HSV of 0.5 to 10 h<-1> and an H2/olefins molar ratio of 0.01 to 1.