Shuling Sun

Catalytic Performance and Synergetic Effect of Mo-V/Al2O3 in Residue Hy-drotreatment: Catalytic Performance and Synergetic Effect of Mo-V/Al2O3 in Residue Hy-drotreatment

Mo-V/Al 2 O 3 catalyst samples with different atom ratios of Mo/(Mo+V) were prepared by pore volume impregnation. The catalyst samples were characterized by Raman spectroscopy, H 2 temperature-programmed reduction, and high resolution transmission electron microscopy. The catalytic performance of Mo-V/Al 2 O 3 samples for model molecules (naphthalene) and for real feedstock (Kuwait atmosphere residue) was measured after sulfidation. Hydrogenation (HYD), hydrodemetallization (HDM), and hydrodesulfurization (HDS) were assessed. It can be concluded that Mo and V exhibited a synergetic effect in model molecules HYD and residue HDM reactions. Because the metals and sulfurs exist in different forms in residue and the V–S and V–Mo–S phases are more active for HDM than HDS, it is observed that the Mo-V/Al 2 O 3 catalyst exhibited higher HDM activity and lower HDS activity compared with the Ni-Mo/Al 2 O 3 catalyst.