I am physicist and work now in bio lubricant. Could you explains to me how to synthesis (Polyol Ester Synthesis) from palm oil? What catalyst use for each steps
Regard
Dianta
Dear Dianta..Please follow the below procedure and attached file.
- Polyol esters were synthesized by the esterification reaction of either Hydroxylated fatty acid (HFA) or FA with pentaerythritol (PE). The synthesis of saturated polyol esters (SPE). The reaction was carried out in a three-neck, round bottom flask equipped with a Dean-Stark water separator, with constant stirring. Phosphotungstic acid was employed as a catalyst at a concentration of 2 wt.% (relative to the mass of the HFA). The specific reaction conditions included a temperature of 220°C, a reaction time of 7 hours, and a molar ratio of HFA or FA : PE of 4.3 : 1. Water formed as a byproduct of the reaction was continuously removed and the quantity of captured water was used to gauge the progress of the reaction. When the reaction was complete, portions of the reaction mixture were removed, neutralized with alkaline solution, and then washed with warm (60°C) water. The resulting polyol esters were dried using a rotary evaporator under reduced pressure at 85°C. The reaction equation was as follows:
Maybe the following paper can help you: Calvin K. Ho, Kimberley B. McAuley, Brant A. Peppley. Biolubricants through renewable hydrocarbons: A perspective for new opportunities Renewable and Sustainable Energy Reviews 113 (2019) 109261.
Hi,
To convert any vegetable oil into bio lubricant, first the vegetable oil is converted into bio diesel by transesterification. Then bio diesel is reacted with trimethylolpropane using sodium methoxide as catalyst to yield palm base trimethylolpropane esters (biolubricants). The reaction conditions for both shall be taken from the literature which is enormously available.
https://www.academia.edu/.../Synthesis_of_palm_oil-based_trimethyl...
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