| 正已烷和超临界流体CO_2中酶催化酯化作用的试验研究 |
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| 引用本文： | 蔡琬蘋. 正已烷和超临界流体CO_2中酶催化酯化作用的试验研究[J]. 中国石油大学学报(自然科学版), 1992, 0(3) |
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| 作者姓名： | 蔡琬蘋 |
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| 作者单位： | 石油大学化工系 |
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| 摘 要： | 以酶作催化剂分别在正已烷和超临界流体CO_2溶剂中,用不同浓度的丁酸和庚醇进行酯化反应,并用Hp-5890气相色谱仪对反应产物进行了分析.结果表明,总反应级数近似为一级.这两种溶剂的反应速率对比表明,在超临界流体里的反应速率比在有机溶剂里的反应速率大,超临界流体可以代替传统的有机溶剂.
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| 关 键 词： | 正已烷 超临界流体 酯化 酶催处理 反应级数 |
EXPERIMENTAL RESEARCH ON ENZYME-CATALYZED ESTERIFICATION IN N-HEXANE AND SUPERCRITICAL CARBON DIOXIDE |
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| Cai Wanpin. EXPERIMENTAL RESEARCH ON ENZYME-CATALYZED ESTERIFICATION IN N-HEXANE AND SUPERCRITICAL CARBON DIOXIDE[J]. Journal of China University of Petroleum (Edition of Natural Sciences), 1992, 0(3) |
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| Authors: | Cai Wanpin |
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| Affiliation: | Dept. of Chemical Engineering |
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| Abstract: | Esterfication of butyric acid and heptanol of different concentrations was carried out in n-hexane and supercritical carbon dioxide solvents by using lipase as acatalyst. The reactor volume was 1.41 mL. The concentrations of the products were determined by gas-chromatography. The test results showed that the reaction was of first order and the reaction velocity constant in supercritical carbon dioxide was greater than in n-hexane. Supercritical carbon dioxide was an alternative to organic solvent used in enzymatic catalysis. |
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| Keywords: | N-hexane Supercritical fluid Esterification Enzyme-catalyzed esterification Reaction order |
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