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Kinetics of Aldol Condensation of Furfural with Acetone Catalyzed by 1,8-Diazabicyclo[5.4.0]undec-7-ene
Department of Chemical & Biological Engineering, Zhejiang University of Science and Technology, Hangzhou, China
Department of Chemical & Biological Engineering, Zhejiang University of Science and Technology, Hangzhou, China
Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
- 1 Department of Chemical & Biological Engineering, Zhejiang University of Science and Technology, Hangzhou, China
- 2 Department of Chemical & Biological Engineering, Zhejiang University of Science and Technology, Hangzhou, China
- 3 Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
Journal of Materials Science and Chemical Engineering·Volume 06 (2018)·Pages 65–73·Published 11 February 2018·DOI10.4236/msce.2018.62005
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Abstract
The kinetics of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)-catalyzed aldol condensation of furfural with acetone was investigated under free solvent conditions from 50℃ - 90℃. The highest yield of 1,4-pentandien-3-on-1,5-di-furanyl catalyzed by DBU reached 98.0% under optimized conditions. According to the kinetic analysis, the reaction order of furfural was estimated as 1.0, the apparent activation energy was 17.7 kJ.mol.1, and the pre-exponential factor was 2.67 L.min.1 in fitting with the Arrhenius equation, which explains the high efficiency of the DBU catalyst. DBU-catalyzed aldol condensation with free solvent offers an alternative route to simplify aldol condensation and separation into a single step.
KeywordsKineticsAldol CondensationDBULiquid Fuels
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