Synthesis of biomass-derived lubricants via esterification, transesterification, and simultaneous reactions of both was studied by using sulfated zirconia catalysts. Soybean oil or free fatty acids derived from soybean oil were used as a biomass-derived resource for the synthesis of biolubricants. Long chain alcohols (carbon number≥ 8) or neo-polyols (eg, 2, 2- diethyl-1, 3-propanediol, trimethylol propane, pentaerythritol) were used as co-reactants. ...