Hydrocracking of vacuum gas oil in the presence of catalysts NiMo/Al2O3-amorphous aluminosilicates and NiW/Al2O3-amorphous aluminosilicates

摘要

Supported nickel-molybdenum and nickel-tungsten hydrocracking catalysts prepared using a support that consists of 70 Al2O3 and 30 amorphous aluminosilicate were characterized by nitrogen and mercury porosimetry, IR spectroscopy of adsorbed CO, and high-resolution electron microscopy. The catalytic tests in hydrocracking of vacuum gas oil containing 3.39 sulfur showed that the nature of the hydrogenating component (NiMo or NiW) only slightly influences the vacuum gas oil conversion and the diesel fraction yield, but noticeable influences the properties of the diesel fraction obtained. The catalyst NiMo/Al2O3-amorphous aluminosilicates, compared to NiW/Al2O3-amorphous aluminosilicates, ensures lower sulfur content in the diesel fraction obtained, whereas the catalyst NiW/Al2O3-amorphous aluminosilicates allows obtaining a diesel fraction with lower content of polyaromatic compounds.