化学学报 ›› 1998, Vol. 56 ›› Issue (5): 465-471. 上一篇    下一篇

研究论文

乙醇和环己烷液体混合物的内压

胡宇军;张锐;黑恩成;刘国杰   

  1. 华东理工大学化学系
  • 发布日期:1998-05-15

The internal pressures of ethanol and cyclohexane liquid mixtures

HU YUJUN;ZHANG RUI;HEI ENCHENG;LIU GUOJIE   

  • Published:1998-05-15

测定了25-65℃温度范围内乙醇和环己烷液体混合物的热压力系数, 它们都很好地遵守我们先前提出的修正van der Waals模型。从模型参数B/A^2, 可以得到乙醇自缔合的破坏与浓度间的定量关系。混合物的内压不仅取决于两个组分的内压, 而且还与相互作用参数A12有关。

关键词: 乙醇, 液体, 混合物, 缔合, 环己烷, 内压

The thermal pressure coeficients of ethanol and cyclohexane liquid mixtures over the range of temperature from 25℃ to 65℃ were measured. The modified van der Waals' model suggested by our previous work is also applicable to these mixtures satisfactorily. From the parameter of model, B/A^2, a quantitative relationship between the destruction of self-association of ethanol and the concentration is obtained. It is found that the internal pressures of the mixtures depend not only on those of two pure components, but on the interaction parameter A12.

Key words: ETHANOL, LIQUID, MIXTURES, ASSOCIATION, CYCLOHEXANE, INTRINSIC PRESSURE

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