| 椰壳酸水解制备木糖的反应动力学 |
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| 引用本文： | 刘仁成,姚伯元,黄广民. 椰壳酸水解制备木糖的反应动力学[J]. 化工学报, 2007, 58(11): 2810-2815 |
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| 作者姓名： | 刘仁成 姚伯元 黄广民 |
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| 作者单位： | 海南大学海南省精细化工重点实验室,海南,海口,570228;海南大学海南省精细化工重点实验室,海南,海口,570228;海南大学海南省精细化工重点实验室,海南,海口,570228 |
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| 摘 要： | 本文研究了椰壳经酸水解制备木糖的反应温度、反应时间和酸浓度对水解液中木糖浓度的影响，探讨了椰壳酸水解反应的机理，建立了木聚糖降解与木糖分解的均相不可逆连串水解反应动力学模型，求出了反应活化能Ea，木糖生成与分解反应速率常数k1、k2，建立了k1 与酸浓度C和反应温度T的关系式，分析了提高k1与k1/k2比值的酸水解条件，其规律可供实现工业化生产借鉴。
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| 关 键 词： | 椰壳酸水解 木糖 反应动力学 |
| 文章编号： | 0438-1157（2007）11-2810-06 |
| 收稿时间： | 2007-02-26 |
| 修稿时间： | 2007-02-26 |
Kinetics of acid hydrolysis of coconut shell to produce xylose |
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| LIU Rencheng,YAO Boyuan,HUANG Guangmin. Kinetics of acid hydrolysis of coconut shell to produce xylose[J]. Journal of Chemical Industry and Engineering(China), 2007, 58(11): 2810-2815 |
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| Authors: | LIU Rencheng YAO Boyuan HUANG Guangmin |
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| Affiliation: | Hainan Provincial Key Laboratory of Fine Chemicals, Hainan University, Haikou 570228, Hainan, China |
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| Abstract: | The effects of reaction time,reaction temperature and acid concentration on xylose concentration in coconut shell hydrolysate were investigated.The acid hydrolysis mechanism for coconut shell was discussed.As a homogeneous irreversible series reactions system,first-order reaction rate models for coconut shell acid hydrolysis were established.The activation energy,kinetic coefficient for xylooligosaccharides hydrolysis and kinetic coefficient for xylose decomposition were estimated.According to the rate equations,the favorable acid hydrolysis conditions were predicted,the drawn conclusions can be used to industrial production. |
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| Keywords: | coconut shell acid hydrolysis xylose reaction kinetics |
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