SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (4): 659-666.DOI: 10.1016/j.cjche.2013.08.003

• 催化、动力学与反应工程 • 上一篇    下一篇

Kinetics of xylose dehydration into furfural in acetic acid

Zhou Chen,Weijiang Zhang, Jiao Xu, Pingli Li   

  1. Institute of Chemical Engineering, Tianjin University, Tianjin 300072, China
  • 收稿日期:2013-04-08 修回日期:2013-08-26 出版日期:2015-04-28 发布日期:2015-05-13
  • 通讯作者: Jiao Xu

Kinetics of xylose dehydration into furfural in acetic acid

Zhou Chen,Weijiang Zhang, Jiao Xu, Pingli Li   

  1. Institute of Chemical Engineering, Tianjin University, Tianjin 300072, China
  • Received:2013-04-08 Revised:2013-08-26 Online:2015-04-28 Published:2015-05-13
  • Contact: Jiao Xu

摘要: In this paper kinetics of xylose dehydration into furfural using acetic acid as catalystwas studied comprehensively and systematically. The reaction order of both furfural and xylose dehydration was determined and the reaction activation energy was obtained by nonlinear regression. The effect of acetic acid concentration was also investigated. Reaction rate constants were gained. Reaction rate constant of xylose dehydration is k1= 4.189×1010 [A]0.1676 exp (-(108.6×1000)/(RT)), reaction rate constant of furfural degradation is k2=1.271×104 [A]0.1375 exp (-(63.413×1000)/(RT)) and reaction rate constant of condensation reaction is k3=3.4051×1010 [A]0.1676 exp(-(104.99×1000)/(RT)) . Based on this, the kinetics equation of xylose dehydration into furfural in acetic acid was set up according to theory of Dunlop and Furfural generating rate equation is [d[F]]/[dt]= k1[X]0e-k1t-k2[F]-k3[X]0e-k1t[F].

关键词: Xylose, Furfural, Acetic acid

Abstract: In this paper kinetics of xylose dehydration into furfural using acetic acid as catalystwas studied comprehensively and systematically. The reaction order of both furfural and xylose dehydration was determined and the reaction activation energy was obtained by nonlinear regression. The effect of acetic acid concentration was also investigated. Reaction rate constants were gained. Reaction rate constant of xylose dehydration is k1= 4.189×1010 [A]0.1676 exp (-(108.6×1000)/(RT)), reaction rate constant of furfural degradation is k2=1.271×104 [A]0.1375 exp (-(63.413×1000)/(RT)) and reaction rate constant of condensation reaction is k3=3.4051×1010 [A]0.1676 exp(-(104.99×1000)/(RT)) . Based on this, the kinetics equation of xylose dehydration into furfural in acetic acid was set up according to theory of Dunlop and Furfural generating rate equation is [d[F]]/[dt]= k1[X]0e-k1t-k2[F]-k3[X]0e-k1t[F].

Key words: Xylose, Furfural, Acetic acid