Journal of Chuxiong Normal University ›› 2023, Vol. 38 ›› Issue (3): 9-16.

• Physics • Previous Articles     Next Articles

Selective Production of 5-Hydroxymethylfurfural from Fructose Catalyzed by Ferric Sulfate with Ionic Liquid Additive and Its Mechanism

SONG Xiangbo1,2, FAN Shuyi1, CHEN Kaisi1, XIONG Wanting1, GUO Zhengxi1, XIE Zeng1   

  1. 1. School of Physics and Electronic Science, Chuxiong Normal University, Chuxiong, Yunnan Province 675000;
    2. Chinese Academy of Sciences, Guangzhou Institute of Energy Resources, Guangzhou,Guangdong Province 510640
  • Received:2023-01-15 Online:2023-05-20 Published:2023-08-07

Abstract: 5-Hydroxymethylfurfural (HMF) is a high value platform compound with a wide range of applications. Selective production of HMF from renewable biomass-based sugars is of great significance for comprehensive development and utilization of biomass resources. In this paper, the bio-based fructose is used as raw material, and the cheap and non-toxic ferric sulfate combined with 1-butyl-3-methylimidazole chloride ionic liquid ([Bmim]Cl) is used as catalyst system to catalyze selective conversion of fructose to HMF. The synergistic catalytic performance of ferric sulfate and [Bmim]Cl is investigated through the detailed investigation of reaction process parameters. Results show that when the reaction temperature is maintained at 140 oC for 1.5 h, the maximum yield of HMF from fructose in pure water system is close to 55%, while it can be increased to 63% in the water-THF miscible system. In addition, the mechanism of fructose conversion catalyzed by ferric sulfate is explored through solvent effect experiment. The mechanism of hydrolysis of ferric sulfate in the presence of water followed by releasing the H+ species to catalyze fructose conversion is proposed.

Key words: biomass, 5-Hydroxymethylfurfural, ionic liquids, ferric sulfate, selectivity

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