论文部分内容阅读
采用填充柱的反相气相色谱方法 ,基于Hadj-Romdhane -Danner色谱过程的数学模型 ,在 3 2 3 .2～ 3 63 .2K温度范围内测定了环己烷在聚异丁烯和聚乙烯膜中的无限稀释扩散系数 .从实验数据可以看出 ,环己烷更容易在PIB中发生扩散 .对实测扩散数据进行了自由体积理论关联 ,结果表明 ,采用空穴自由体积替代Vrentas -Duda自由体积理论方程中自由体积项的修正方程能很好地描述溶剂分子扩散系数随温度的变化关系
The reversed-phase gas chromatography with packed column was used to determine the molar ratio of cyclohexane to polyisobutylene and polyethylene film in the temperature range of 32.2-2.363.2K based on the mathematical model of Hadj-Romdhane-Ranan chromatography From the experimental data, it can be seen that cyclohexane is more easily diffused in PIB.The theory of free volume is applied to the measured diffusion data.The results show that the free volume of hole is used to replace the Vrentas-Duda free volume theory The correction equation of the free volume term can well describe the relationship between the solvent diffusion coefficient and temperature