Catalizadores M-Mo/HMS (M = Fe, Co o Ni) en sus formas sulfuradas y nitruradas como potenciales sistemas catalíticos de hidrodesulfuración

This work was focused in the study of the oxide phases Fe(Co or Ni)-Mo as precursors of sulfides and nitrides phases supported on HMS. The synthetic method allowed to obtain the bimetallic phases with high specific areas and spherical morphologies: Fe₂(MoO₄)₃, CoMoO₄ and Ni₂MoO_x, that were transformed at Co₃Mo₃N, Ni₃Mo₃N and Fe₃Mo₃N. The catalytic activities shown, independently of type of pre-treatment, were superior to those of two commercial catalysts, which suggest that these materials could be a good alternative for this type of reaction. Likewise, an in situ activation treatment of the nitrides allowed obtaining a significant increase of the catalytic activity.