Hydrodeoxygenation of waste fat for diesel production: Study on model feed with Pt/alumina catalyst

► Alkanes were formed by deoxygenation of oleic acid and tripalmitin over Pt/Al2O3. ► Odd carbon number alkanes formed almost exclusively via CO/CO2 removal. ► Full reduction was limited despite moderate hydrogen pressure. ► Triglyceride conversion was limited by free fatty acid formation as intermediate.