| 高温液态水中葡萄糖无催化降解反应动力学 |
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| 引用本文： | 荆琪,吕秀阳.高温液态水中葡萄糖无催化降解反应动力学[J].中国化学工程学报,2008,16(6):890-894. |
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| 作者姓名： | 荆琪 吕秀阳 |
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| 作者单位： | Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （20674068） and the Natural Science Foundation of Zhejiang Province （Y405157）. |
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| 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.
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| 关 键 词： | high-temperature hydrothermal decomposition glucose 5-hydroxymethylfurfural levulinic acid reaction kinetics |
| 收稿时间： | 5 December 2007 |
| 修稿时间： | 2007-12-5
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Kinetics of non-catalyzed decomposition of glucose in high-temperature liquid water |
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| JING Qi,LÜ,Xiuyang.Kinetics of non-catalyzed decomposition of glucose in high-temperature liquid water[J].Chinese Journal of Chemical Engineering,2008,16(6):890-894. |
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| Authors: | JING Qi LÜ Xiuyang |
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| Affiliation: | Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | The decomposition kinetics of glucose was studied in high-temperature liquid water (HTLW) from 180 to 220°C 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. |
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| Keywords: | high-temperature hydrothermal decomposition glucose 5-hydroxymethylfurfural levulinic acid reaction kinetics |
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