Hydrotreating of High-Aromatic Waste of Coke and By-Product Processes in the Presence of in Situ Synthesized Sulfide Nanocatalysts

Abstract

The hydrodearomatization and hydrodesulfurization of the coking resin fraction (below 360°C) in the presence of in situ synthesized Ni–W–S catalysts are studied using tungsten hexacarbonyl W(CO)₆ and nickel(II) 2-ethylhexanoate Ni(C₇H₁₅COO)₂ oil-soluble salts at a molar ratio of W: Ni = 1: 2 as precursors for the Ni–W–S catalysts. The resulting catalysts are characterized by transmission electron microscopy; the formation of agglomerates of nanoparticles with an average diameter of 100–200 nm is shown. The optimum temperature for the hydrotreating of the coking resin (380°C) is determined.