Kinetic Study of Hydrodesulfurization, Hydrodenitrogenation, and Hydrogenation of Heavy Oil Feedstock Compounds on Sulfide Ni6PMonW(12–n)/Al2O3 Hydrotreating Catalysts

Abstract Kinetic studies of hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) reactions were performed. The hydrogenating activity of the synthesized Ni6PMonW(12–n)/Al2O3 catalysts was compared with that of the commercial reference catalyst in the process of hydrotreating of heavy mixed oil feedstock. It was shown that the HDS reaction is described by a pseudosecond order equation, and HDN, by a pseudofirst order equation. The obtained hydrogenates meet the requirements to the quality of feedstock for catalytic cracking plants in terms of coking capacity and sulfur and nitrogen contents.