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Chemistry and Industry of Forest Products ›› 2016, Vol. 36 ›› Issue (6): 35-40.doi: 10.3969/j.issn.0253-2417.2016.06.006

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Production of Bio-aviation Fuel Intermediates by Aldol Condensation of Furfural and Methyl Isobutyl Ketone over K+/CaO

QI Xue-zhen, XIE Min-hui, LIN Shao-jie, ZHANG Hai-yan, LIU Xue-jun, LU Mei-zhen, JI Jian-bing   

  1. Zhejiang Province Key Laboratory of Biofuel, School of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
  • Received:2016-01-22 Online:2016-12-25 Published:2016-12-23

Abstract: The supported solid base catalyst K+/CaO was synthesized by isometric impregnation-calcination method. The structure of catalysts were characterized by XRD and CO2-TPD. Preparation of the bio-aviation fuel intermediate of furfural-methyl isobutyl ketone (F-MIBK) catalyzed by K+/CaO through condensation of furfural and methyl isobutyl ketone under solvent-free conditions was studied. The effects of different types of catalyst, different loading of alkali metal ion,reaction temperature, reaction time and the molar ratio of material on the reaction were investigated. The results indicated that the condensation reaction of furfural and methyl isobutyl ketone was carried on the strong basic sites of the catalyst, and the addition of K+ significantly improved the alkaline of CaO. K+/CaO gave the optimum catalytic performance with 1% loading of K2CO3. When the molar ratio of furfural and methyl isobutyl ketone was 1:2 and the amount of catalyst was 10% of the mass of the material at 140℃ for 3h, furfural conversion rate reached 99.1%. The selectivity and yield of F-MIBK reached 98.2% and 97.1%,respectively.

Key words: K+/CaO, furfural, methyl isobutyl ketone, bio-aviation fuel

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