| High Pressure Vapor-Liquid Equilibrium of Supercritical Carbon Dioxide ＋ n-Hexane System |
| |
| 引用本文： | 于璟琳,田宜灵,朱荣娇,刘志华.High Pressure Vapor-Liquid Equilibrium of Supercritical Carbon Dioxide ＋ n-Hexane System[J].天津大学学报(英文版),2006,12(6):452-456. |
| |
| 作者姓名： | 于璟琳 田宜灵 朱荣娇 刘志华 |
| |
| 作者单位： | School of Science Tianjin University，School of Science Tianjin University，School of Science Tianjin University，School of Science Tianjin University，Tianjin 300072 China Tianjin 300072 China Tianjin 300072 China Tianjin 300072 China |
| |
| 摘 要： | Vapor-liquid equilibrium data are important forthe design, development, and operation of supercriti-cal fluid separation processes1].The main method forobtaining phase equilibrium data is experimentation.Most published articles on high-pressure fluid-phaseequilibrium experimental methods focus on supercriti-cal (SC) carbon dioxide because of its low criticaltemperature and pressure, nontoxicity, and lowcost. A feature of SC fluids is that their densities anddensity-dependentproperties are s…
|
| 关 键 词： | 二氧化碳 n-己烷 摩尔分数 密度 摩尔体积 |
| 收稿时间： | 2006-03-14 |
High Pressure Vapor-Liquid Equilibrium of Supercritical Carbon Dioxide + n-Hexane System |
| |
| YU Jinglin,TIAN Yiling,ZHU Rongjiao,LIU Zhihua.High Pressure Vapor-Liquid Equilibrium of Supercritical Carbon Dioxide + n-Hexane System[J].Transactions of Tianjin University,2006,12(6):452-456. |
| |
| Authors: | YU Jinglin TIAN Yiling ZHU Rongjiao LIU Zhihua |
| |
| Abstract: | Vapor-liquid equilibrium data of supercritical carbon dioxide + n-hexane system were measured at 313.15 K,333.15 K,353.15 K,and 373.15 K and their molar volumes and densities were measured both in the subcritical and supercritical regions ranging from 2.15 to 12.63 MPa using a variable-volume autoclave.The thermodynamic properties including mole fractions,densities,and molar volumes of the system were calculated with an equation of state by Heilig and Franck,in which a repulsion term and a square-well potential attraction term for intermolecular interaction was used.The pairwise combination rule was used to calculate the square-well molecular interaction potential and three adjustable parameters (ω,kε,kσ) were obtained.The Heilig-Franck equation of state is found to have good correlation with binary vapor-liquid equilibrium data of the carbon dioxide + n-hexane system. |
| |
| Keywords: | carbon dioxide n-hexane molar fraction density molar volume |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
