| 氯化铁催化木糖降解制备糠醛反应动力学 |
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| 引用本文： | 马赛,李凭力,朱涛,林龙. 氯化铁催化木糖降解制备糠醛反应动力学[J]. 化工进展, 2015, 34(1): 108-112. DOI: 10.16085/j.issn.1000-6613.2015.01.019 |
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| 作者姓名： | 马赛 李凭力 朱涛 林龙 |
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| 作者单位： | 1.天津大学化工学院化学工程研究所, 天津 300072;2.天津市膜科学与海水淡化技术重点实验室, 天津 300072 |
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| 摘 要： | 研究了温度在443.15～483.15K时0.1mol/L氯化铁催化木糖降解生成糠醛的反应动力学过程。首先建立并验证了反应的动力学模型,根据模型得到了木糖降解、糠醛降解和缩合反应的速率常数。由阿伦尼乌斯方程拟合得到其表观活化能分别为107.94kJ/mol、65.86 kJ/mol和26.36kJ/mol。结果表明,高温和较短反应时间有利于糠醛收率的提高,在反应温度483.15K、60min条件下,最大糠醛收率可达78%。
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| 关 键 词： | 氯化铁 木糖 糠醛 反应动力学 |
| 收稿时间： | 2014-06-20 |
Dehydration kinetics from xylose to furfural with ferric chloride as catalyst |
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| MA Sai,LI Pingli,ZHU Tao,LIN Long. Dehydration kinetics from xylose to furfural with ferric chloride as catalyst[J]. Chemical Industry and Engineering Progress, 2015, 34(1): 108-112. DOI: 10.16085/j.issn.1000-6613.2015.01.019 |
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| Authors: | MA Sai LI Pingli ZHU Tao LIN Long |
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| Affiliation: | 1 Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2 Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300072, China |
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| Abstract: | The dehydration kinetics from xylose to furfural with 0.1mol/L ferric chloride as catalyst was studied at temperature range from 443.15K to 483.15K. The kinetic model was established and tested, then the reaction rate constants of xylose dehydration, furfural degradation and condensation were obtained according to assumed kinetic model. The evaluated activation energies of these reactions were quantified via Arrhenius plots, and the values were 107.94kJ/mol, 65.86kJ/mol and 26.36kJ/mol, respectively. The experimental results showed that high temperature and short time were beneficial to improve the furfural yield, and the maximum furfural yield of 78% was obtained at 483.15K and 60min. |
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| Keywords: | ferric chloride xylose furfural reaction kinetics |
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