Sulfide NiMo/Zeolite–Al2O3 Catalysts for Hydrotreating Feedstocks Containing Chlorinated Thermolysis Oil

Abstract Recent years have seen not only the widespread use of plastic in many industries, but also the growing importance of recycling and the search for alternative methods of disposing plastic waste. The paper proposes the introduction of a plastics processing product into the hydrotreating of traditional petroleum fractions. The influence of mono- (Y/ZSM-23) and bizeolite (Y + ZSM-23) sulfide NiMo catalysts on the hydrotreating of a feedstock comprising chlorine-containing thermolysis oil is studied. It was shown that all the synthesized catalysts provide a conversion of chlorine-containing compounds above 92%. It was found that, in the process of hydrotreating, zeolite-containing catalysts influence the fractional composition of the obtained hydrogenates due to cracking and isomerization reactions, contributing to an increase in the yield of light fractions. It was shown that the catalyst based on zeolite Y demonstrates the prospects of its application due to high activity in the conversion of heteroatomic compounds and high-boiling n-alkanes.