NiMo/zeolite-Al2O3 sulfide catalysts for hydrotreating feedstocks including chlorine-containing thermolysis oil

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