Han, Shucui published the artcileNovel self-solidifying double-site acidic ionic liquid as efficient and reusable catalyst for green biodiesel synthesis, Name: Methyl decanoate, the main research area is bisdiphenylphosphinoethane propanesulfonate catalyst fatty acid methanol esterification biodiesel production.
In this work, two double-site acidic ionic liquids were synthesized by a two-step method via the reaction of 1,2-bis(diphenylphosphino) ethane (DPhPE) with 1,3-propanesulfonate (PS) to form a DPhPE-PS zwitterion followed by acidification with different acids. The obtained ionic liquids were characterized and further used as catalyst for the esterification of various free fatty acids with methanol to produce biodiesel. The suitable self-solidifying double-site acidic ionic liquid [DPhPE-PS][HSO4]2 is homogeneous catalytic due to its solubility during the esterification, which is precipitated after reaction. The evaporation of the residual methanol and generated water combines the advantages of homogeneous and heterogeneous catalysts, including their excellent catalytic activity and convenient recovery. [DPhPE-PS][HSO4]2 exhibits 98.65% of oleic acid conversion under operating appropriate conditions optimized by response surface methodol. (catalyst dosage of 6.0 wt%, molar ratio of methanol to oleic acid of 10.0:1, reaction temperature of 60.0 °C, and reaction time of 4.0 h) and keeps outstanding catalytic performance after 9 cycles. Moreover, [DPhPE-PS][HSO4]2 also displays excellent catalytic activity and good versatility in the esterification of various free fatty acids to biodiesel. Hence, the self-solidifying double-site acidic ionic liquid [DPhPE-PS][HSO4]2 can be used as an environmentally friendly and efficient catalyst for synthesis of biodiesel via esterification.
Fuel published new progress about Acidification. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Name: Methyl decanoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics