| 乙醇对超临界CO2中乙酰乙酸乙酯异构化平衡的影响 |
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| 引用本文： | 柯杰,鲁洁,钟明宏,邹蕾,韩布兴,阎海科.乙醇对超临界CO2中乙酰乙酸乙酯异构化平衡的影响[J].物理化学学报,1997,13(4):351-353. |
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| 作者姓名： | 柯杰 鲁洁 钟明宏 邹蕾 韩布兴 阎海科 |
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| 作者单位： | Institute of Chemistry,Academia Sinica,Beijing 100080,China |
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| 摘 要： | 超临界流体（SCF）是物质所处的温度和压力同时高于其临界值时的流体．在超临界体系中存在特殊的分子间相互作用，从而使其具有诸如高压缩性、高扩散系数、强溶剂化力等许多独特的性质.在超临界流体研究领域引起人们普遍关注的问题之一是共溶剂效应（cosolventeffect），即在超
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| 关 键 词： | 超临界CO2 乙酰乙酸乙酯 异构化 共溶剂 聚集体 |
| 收稿时间： | 1996-09-09 |
| 修稿时间： | 1996-10-14 |
Effect of Ethanol on the Tautomerism of Ethyl Acetoacetate in Supercritical Co_2 |
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| Ke Jie, Lu Jie, Zhong Minghong, Zou Lei ,Han Buxing, Yan Haike.Effect of Ethanol on the Tautomerism of Ethyl Acetoacetate in Supercritical Co_2[J].Acta Physico-Chimica Sinica,1997,13(4):351-353. |
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| Authors: | Ke Jie Lu Jie Zhong Minghong Zou Lei Han Buxing Yan Haike |
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| Institution: | Institute of Chemistry,Academia Sinica,Beijing 100080,China |
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| Abstract: | The enol contents and equilibrium constants of the ketcrenol tautomerism of ethyl acetoaretate were determined in various solvents using UV spectroscopy. It was found that in supercritical CO2 the enol content decreases dramatically in the presence of 0.047mol.L-1 ethanol.In liquid cyclohexane, however, the effect of the same amount of ethanol on enol content is not detectable. The strong cosolvent effect in SC CO2 results from the clustering of the cosolvent around the solute. |
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| Keywords: | Supercritical CO_2 Ethyl acetoaretate Tautomerism Cosolvent Cluster |
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