SCI和EI收录∣中国化工学会会刊

›› 2008, Vol. 16 ›› Issue (6): 890-894.

• • 上一篇    下一篇

Kinetics of Non-catalyzed Decomposition of Glucose in High-temperature Liquid Water

荆琪, 吕秀阳   

  1. Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2007-12-05 修回日期:2008-07-31 出版日期:2008-12-28 发布日期:2008-12-28
  • 通讯作者: LÜ Xiuyang,E-mail:luxiuyang@zju.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (20674068) and the Natural Science Foundation of Zhejiang Province (Y405157)

Kinetics of Non-catalyzed Decomposition of Glucose in High-temperature Liquid Water

JING Qi, LÜ Xiuyang   

  1. Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2007-12-05 Revised:2008-07-31 Online:2008-12-28 Published:2008-12-28
  • Supported by:
    Supported by the National Natural Science Foundation of China (20674068) and the Natural Science Foundation of Zhejiang Province (Y405157)

摘要: The decomposition kinetics of glucose was studied in high-temperature liquid water(HTLW) from 180 to 220℃ under a pressure of 10 MPa.It was found the main products from glucose decomposition were 5-hydroxymethylfurfural(5-HMF)and levulinic acid(LA).The decomposition kinetics of 5-HMF and stability of LA in HTLW were further investigated.A kinetic model for glucose decomposition was proposed accordingly.In the model,a series of first-order reactions with the consideration of parallel by-reactions were used to illustrate the decomposition of glucose.The decomposition activation energies of glucose,5-HMF,and LA were evaluated as 118.85,95.40,and 31.29 kJ·mol-1,respectively.

关键词: high-temperature hydrothermal decomposition, glucose, 5-hydroxymethylfurfural, levulinic acid, reaction kinetics

Abstract: The decomposition kinetics of glucose was studied in high-temperature liquid water(HTLW) from 180 to 220℃ under a pressure of 10 MPa.It was found the main products from glucose decomposition were 5-hydroxymethylfurfural(5-HMF)and levulinic acid(LA).The decomposition kinetics of 5-HMF and stability of LA in HTLW were further investigated.A kinetic model for glucose decomposition was proposed accordingly.In the model,a series of first-order reactions with the consideration of parallel by-reactions were used to illustrate the decomposition of glucose.The decomposition activation energies of glucose,5-HMF,and LA were evaluated as 118.85,95.40,and 31.29 kJ·mol-1,respectively.

Key words: high-temperature hydrothermal decomposition, glucose, 5-hydroxymethylfurfural, levulinic acid, reaction kinetics