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Chemistry and Industry of Forest Products ›› 2022, Vol. 42 ›› Issue (3): 65-74.doi: 10.3969/j.issn.0253-2417.2022.03.009

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Optimization and Kinetics of Hydrolysis of 5-Chloromethylfurfural to 5-Hydroxymethylfurfural

Shuai WANG1, Xing TANG1,2,*(), Yong SUN1,2, Xianhai ZENG1,2, Lu LIN1,2   

  1. 1. Xiamen Key Laboratory of Clean and High-valued Utilization for Biomass; College of Energy, Xiamen University, Xiamen 361102, China
    2. Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass, Xiamen University, Xiamen 361102, China
  • Received:2021-03-11 Online:2022-06-28 Published:2022-07-04
  • Contact: Xing TANG E-mail:x.tang@xmu.edu.cn

Abstract:

The hydrolysis of 5-chloromethyl furfural(CMF) in pure water or water/acetone system to 5-hydroxymethyl furfural(HMF) was studied. The effects of hydrolysis reaction conditions(such as solvent system, alkali neutralizer, temperature and CMF addition amount) on the hydrolysis of CMF were investigated, and the kinetics of the hydrolysis reaction was analyzed. The results showed that the water/acetone system is helpful to reduce the side reaction of HMF, and the addition of sodium disulfite(Na2S2O4) could further prevent the generation of humus. The optimal hydrolysis conditions are as follows: 1 g CMF was added with 0.35 g CaCO3 in a mixture of 10 mL water/acetone with volume ratio of 1∶4, and incubated at 353.15 K for 28 min. Under these conditions, the CMF conversion rate was 97%, the yield of HMF was 85%, and the yield of by-product levulinic acid(LA) was 6%. The separation rate of HMF increased from 50% to 86% with the addition of Na2S2O4. The kinetic study results showed that the activation energy of CMF hydrolysis was 12.3 kJ/mol and the hydrolysis rate constant k1=5.56exp(-1.23×104/RT) in water/acetone system.

Key words: biomass, 5-chloromethylfurfural, hydrolysis, reaction kinetics, separation and purification

CLC Number: