Synthesis and Application of Acidic and Hydrophobic Ionic Liquids in Mannich Reaction and Esterification of Fatty Acids

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Karbalaie Reza, Mina | 2015

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 47343 (03)
University: Sharif University of Technology
Department: Chemistry
Advisor(s): Mahmoodi Hashemi, Mohammed
Abstract:
The current study deals with application of a surfactant-like Brønsted acidic ionic liquid (IL) 1-dodecyl-3-methylimidazolium hydrogensulfate (catalys 1) for Mannich reaction at room temperature. The reaction has been efficiently proceeds in water as solvent without using any harmful and expensive organic additives. Our observation has been shown that the reaction is selective for cyclohexanone and no product was observed by using cyclopentanone at room temperature. Density functional theory (DFT) calculations were performed to provide evidence about the nature of reactivity of the cyclohexanone/cyclopentanone. The activity of the catalyst 2 (1-dodecyl-2,3-dimethylimidazolium hydrogensulfate) was also tested for biodiesel production of fatty acids with methanol and ethanol at mild thermal condition without applying additional water removal steps such as using additives or performing special methodologies like azeotropic distillation. In both reaction the IL can recycle and reused for several time with relatively constant efficiency
Keywords:
Mannich Reaction ; Esterification ; Biodiesel ; Hydrophobicity ; Ionic Liquids Synthesis ; Acidic Ionic Liquid

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