Kinetics of xylose dehydration into furfural in acetic acid

In this paper kinetics of xylose dehydration into furfural using acetic acid as catalyst was 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 ac...

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Bibliographic Details
Published in:Chinese journal of chemical engineering 2015-04, Vol.23 (4), p.659-666
Main Authors: Chen, Zhou, Zhang, Weijiang, Xu, Jiao, Li, Pingli
Format: Article
Language:English
Subjects:
Acetic acid
Dehydration
Furfural
Mathematical analysis
Rate constants
Reaction kinetics
Texts
Xylose
乙酸
反应活化能
反应速率常数
木糖
糠醛
脱水动力学
速率方程理论
非线性回归
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Summary:In this paper kinetics of xylose dehydration into furfural using acetic acid as catalyst was 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 investi- gated. Reaction rate constants were gained. Reaction rate constant of xylose dehydration is kl = 4.189 × 10^10[A]^0.1676 axp （-108.5×1000/RT）, reaction rate constant of furfural degradation is k2=1.271×10^10[A]0.1375 exp （-63.413×1000/RT）and reaction rate constant of condensation reaction is k3-3.4051×10^10[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-k1 1[F]
ISSN:1004-9541
2210-321X
DOI:10.1016/j.cjche.2013.08.003