DEOXYGENATION OF FATTY ACIDS FOR PREPARATION OF HYDROCARBONS

摘要

Embodiments of methods for making renewable diesel by deoxygenating fatty acids to produce hydrocarbons are disclosed. Fatty acids are exposed to a catalyst selected from a) M 1 /M 2 /M 3 O 2 where M 1 is a transition metal, a transition metal oxide, or a combination thereof, wherein the transition metal is Fe, Mn, Mo, V, or W, M 2 is Pt, PtO, PtO 2 , or a combination thereof, and M 3 is Ti or Zr, or b) Pt/Ge or Pt/Sn on carbon, and the catalyst decarboxylates at least 10% of the fatty acids. Deoxygenation is performed without added hydrogen and at less than 100 psi. Disclosed embodiments of the catalysts deoxygenate at least 10% of fatty acids in a fatty acid feed, and remain capable of deoxygenating fatty acids for at least 200 minutes to more than 350 hours.