Mild-Temperature hydrodeoxygenation of vanillin a typical bio-oil model compound to Creosol a potential future biofuel

• Solvent polarity index and hydrogen uptake influence conversion selectivity. Pd/C PdRh/Al 2 O 3 showed excellent stability after three cycles of experiments. Orders effect catalyst process parameters are summarised as follows. Creosol Selectivity: >> Rh/Al Pt/SiO > Pd/Al Pt/C. Degree deoxygenation: loading temperature pressure agitation. This study reports mild hydrodeoxygenation (HDO) vanillin an oxygenated phenolic compound found in bio-oil to creosol. It investigates the sensitivity HDO reaction changes solvent, support active metal type, processing using 100 ml batch reactor. The considered include (318 K – 338 K), gas (1 MPa MPa), (0.1 kg/m 0.5 ), agitation speed (500 rpm–900 rpm). As expected, significant variation product selectivity was displayed results. Among solvents considered, 2-propanol ethyl acetate produced best performance with close % toward creosol above 90 %. Remarkable differences were H during VL under different catalyst. hierarchy catalysts include: = Pt/C . correlated catalytic performance; emerged among monometallic 71 creosol, but consumed 9 mmol per mol converted. While prepared bimetallic slightly lower amount (8 mmol), significantly higher (99 %). Even demonstrated superior over 80 condition that maximises degree deoxygenation derived via Taguchi analysis includes K, partial 3.0 MPa, , 500 rpm.