Synthesis of Biolubricant Trimethylolpropane Trioleate and Its Lubricant Base Oil Properties

Trimethylolpropane trioleate (TMPTO) could significantly reduce environmental pollution compared to mineral oils. In this study, oleic acid (OA) and trimethylolpropane (TMP) were used to synthesize TMPTO, and the synthesis process was optimized by single-factor experiments to obtain the highest yield. First, two kinds of operating conditions (vacuum distillation and atmospheric reflux) were compared, and then four kinds of catalysts were...