| 调酸式催化水解稻壳制备乙酰丙酸的研究 |
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| 引用本文： | 于志民,李相昆,沈光.调酸式催化水解稻壳制备乙酰丙酸的研究[J].黑龙江大学自然科学学报,2009,26(4). |
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| 作者姓名： | 于志民 李相昆 沈光 |
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| 作者单位： | 1. 黑龙江省科学院,自然与生态研究所,哈尔滨,150040
2. 哈尔滨工业大学,市政环境工程学院,哈尔滨,150090 |
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| 基金项目： | 黑龙江省科技攻关项目 |
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| 摘 要： | 试验采用调酸式稀酸催化水解工艺,从稻壳中提取乙酰丙酸.根据Box-Behnken实验设计方法,确定影响乙酰丙酸收率的主要因素分别为硫酸浓度、反应温度、反应时间和液固比,分别在三水平条件下进行了27次试验,并建立了二次方程的模型,R2=0.986 1,显示该模型具有较好的拟合度;进一步通过响应面分析确定优化的水解条件:硫酸浓度3.9%,温度227℃,反应时间32 min,液固比16:1.在调酸催化水解工艺条件下,目标产物收率为38.426%,与模型估计值接近.
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| 关 键 词： | 调酸式稀酸水解 稻壳 乙酰丙酸 响应面分析 |
Study on preparation of levulinic acid from rice husk by catalyzed hydrolysis of acid regulation method |
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| YU Zhi-min,LI Xiang-kun,SHEN Guang.Study on preparation of levulinic acid from rice husk by catalyzed hydrolysis of acid regulation method[J].Journal of Natural Science of Heilongjiang University,2009,26(4). |
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| Authors: | YU Zhi-min LI Xiang-kun SHEN Guang |
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| Institution: | 1.Institute of Natural Resources and Ecology;Heilongjiang Academy of Sciences;Harbin 150040;China;2.Institute of Municipal and Environmental Engineering;Harbin Institute of Technology;Harbin 150090;China |
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| Abstract: | Levulinic acid was extracted from rice husk by technology of catalyzed hydrolysis of diluted acid regulation.By experimental design method of Box-Behnken,reaction temperature,sulfuric acid concentration,liquid to solid ratio and reaction time were confirmed as the four main factors which have impact on yield of levulinic acid.27 experiments were taken under three levels.Model of quadratic equation was established,namely R2=0.986 1,which showed preferable fitting degree.Hydrolysis conditions were further ana... |
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| Keywords: | hydrolysis of diluted acid regulation rice husk levulinic acid analysis of Response Surface |
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