确定酮、醛、醚和含氮化合物第二维里系数的新方法

A NEW METHOD FOR DETERMINING SECOND VIRIAL COEFFICIENTS OF KETONE,ALDEHYDE,AETHER AND NITROGENOUS COMPOUNDS

本文提出了一套新的用来确定酮、醛、醚和含氮化合物第二维里系数的新方法。在新的非极性流体预估式的基础上,应用对比态原理,给出了酮、醛、醚和含氮化合物极性流体的优化参数,并对其进行了经验关联,使本预估式能应用于大部分非氢键,弱缔合效应的极性流体。并且仅仅需要临界温度、临界压力、偏心因子和对比偶极距作为预估参数。预估结果与最新的高精度的实验数据符合得很好。

A new method for determining second virial coefficients of ketone, aldehyde, aether and nitrogenous compounds was developed based on the corresponding-states principle. The new method gives a satisfactory prediction for polar compounds, with only a knowledge of the critical temperature, critical pressure, acentric factor and reduced dipole moment. Comparisons with the new, high-quality experimental data and existing models show that the correlation is more accurate, reliable and satisfactory. The results show that the present work is roughly equivalent to the Tsonopoulos correlation for such polar fluids.