| 水杨酸在含夹带剂的超临界CO2中的溶解度 |
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| 引用本文： | 姚晓敏,李群生,张泽廷,于恩平. 水杨酸在含夹带剂的超临界CO2中的溶解度[J]. 北京化工大学学报(自然科学版), 2004, 31(2): 9-13,17 |
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| 作者姓名： | 姚晓敏 李群生 张泽廷 于恩平 |
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| 作者单位： | 北京化工大学化学工程学院; 北京 100029 |
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| 基金项目： | 国家自然科学基金 , 教育部科学技术基金 |
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| 摘 要： | 采用流动法测定和研究了水杨酸在308K,328K下,100～250MPa范围内,在纯超临界CO2和环己烷、丙酮及乙醇做夹带剂的超临界CO2中的溶解度。实验数据表明三种夹带剂的加入均增大了水杨酸在SC-CO2中的溶解度,其增大幅度依次为环己烷、乙醇和丙酮。文中论述了温度、压力对溶解度的影响,对三种夹带剂的“提携”作用机理进行了分析,并用Sovova方程对实验数据进行了回归,得到了较满意的结果.
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| 关 键 词： | 超临界CO2 水杨酸 溶解度 夹带剂 超临界CO2 水杨酸 溶解度 夹带剂 |
| 收稿时间： | 2003-09-03 |
| 修稿时间： | 2003-09-03 |
Solubility of salicylic acid in supercritical carbon dioxide with cosolvents |
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| Yao Xiao min Li Qun sheng Zhang Ze ting Yu En ping. Solubility of salicylic acid in supercritical carbon dioxide with cosolvents[J]. Journal of Beijing University of Chemical Technology, 2004, 31(2): 9-13,17 |
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| Authors: | Yao Xiao min Li Qun sheng Zhang Ze ting Yu En ping |
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| Affiliation: | (College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | The solubility of salicylic acid in supercritical carbon dioxide with and without ethanol, acetone and cyclohexane as cosolvents at temperatures of 308?K and 328?K, and pressures from 10 0 to 25 0?MPa was measured, using a continuous flow type equilibrium cell. A continuous flow apparatus was applied in this work. The solubility data were correlated by a mathematical model presented by Sovova with fairly good accuracy. It shows that the solubility enhancement with these cosolvents is considerable and the cosolvents effect increases in the order of cyclohexane,ethanol and acetone.The effect of temperature and pressure on solubility of salicylic acid was investigated. |
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| Keywords: | supercritical carbon dioxide salicylic acid solubility cosolvent |
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