Hydrogenation of olefins over hydrotreating catalysts

In connection with the specific requirements of the hydrotreating of FCC gasoline, the selectivity of hydrotreating catalysts in hydrodesulfurization with respect to the hydrogenation of olefins has to be controlled and if possible improved. The aim of this study was, on the one hand, to ascertain the role of Co and Ni on the activity of MoS2 catalysts in the activation of dihydrogen and in the hydrogenation of olefins and, on the other hand, to identify the origin of the hydrogen involved in the hydrogenation reaction.