Sulfide Catalysts for Production of Motor Fuels from Fatty Acid Triglycerides

Patents dealing with the production of motor fuel components by hydrodeoxygenation of renewable raw materials based on fatty acid triglycerides were analyzed. Specifically, various methods of using sulfide catalysts in hydrodeoxygenation of fatty acid triglycerides and of their mixtures with petroleum fractions are considered. The ways to overcome problems that arise in hydrodeoxygenation, based on using sulfide catalysts differing in the active component and support composition, are presented. In particular, the use of supported MoS ₂ catalysts free of Co and Ni ensures the conversion of fatty acid triglycerides along the "direct hydrodeoxygenation" pathway to avoid the formation of CO _x and related process problems. The use of sulfide catalysts on zeolite-containing supports allows synthesis of products with improved low-temperature properties due to isomerization (or mild hydrocracking) of С ₁₅–С ₁₈ alkanes formed by hydrodeoxygenation of fatty acid triglycerides.