| 固体酸催化半纤维素水解的基础动力学研究 |
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| 引用本文： | 项巍,朱建良.固体酸催化半纤维素水解的基础动力学研究[J].安徽农业科学,2011,39(20):12560-12561,12580. |
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| 作者姓名： | 项巍 朱建良 |
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| 作者单位： | 南京工业大学生物与制药工程学院,江苏,南京,210009 |
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| 摘 要： | 目的]研究固体酸催化玉米秸秆半纤维素水解的基础动力学。方法]单因素试验确定最佳固体酸种类、固固比、固液比,然后在以上最优条件下,综合考察反应温度和时间对半纤维素水解产率的影响。结果]固体酸催化玉米秸秆半纤维素水解的最适反应条件：2号固体酸为催化剂,固固比1∶1,固液比1∶15,反应温度100℃,反应时间10 h。在该最适条件下,可溶性总糖浓度为34.7 g/L,半纤维素水解产率为93.8%。结论]该研究为固体酸降解玉米秸秆工艺的优化和放大设计提供了基础动力学数据。
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| 关 键 词： | 固体酸 半纤维素 玉米秸秆 水解 |
Basic Dynamics Research of Hemicellulose Hydrolysis by the Solid Acid |
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| Institution: | XIANG Wei et al(College of Biology and Pharmacy Engineering,Nanjing University of Technology,Nanjing,Jiangsu 210009) |
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| Abstract: | Objective] The research aimed to study the basic dynamics of corn straw hemicellulose hydrolysis by the solid acid.Method] The optimal solid acid class,solid-solid ratio,solid-liquid ratio were determined by the single factor experiment.Then,under the above best condition,the influences of reaction temperature and time on the hydrolysis rate of hemicellulose were comprehensively inspected.Result] The optimal reaction condition of corn straw hemicellulose hydrolysis by the solid acid:number 2 solid acid as the catalyst,the solid-solid ratio was 1∶1,the solid-liquid ratio was 1∶15,the reaction temperature was 100 ℃,and the reaction time was 10 h.Under the optimal condition,the soluble total sugar concentration was 34.7 g/L,and the hydrolysis rate of hemicellulose was 93.8%.Conclusion] The research provided the basic dynamics data for the optimization and amplification design of corn straw hydrolysis technics by the solid acid. |
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| Keywords: | Solid acid Hemicellulose Corn straw Hydrolysis |
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