Vapor Pressure and Heat of Vaporization of Molecules That Associate in the Gas Phase,Industrial & Engineering Chemistry Research

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Vapor Pressure and Heat of Vaporization of Molecules That Associate in the Gas Phase
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-04-16 , DOI: 10.1021/acs.iecr.7b04241
Radomir I. Slavchov ₁ , Javor K. Novev ₂ , Sebastian Mosbach ₁ , Markus Kraft _{1,

3}

Affiliation

A model of the temperature dependence of the vapor pressure and the heat of vaporization of liquids whose vapors contain associates is presented for two cases: dimers and linear associates in the gas phase. The results are analytic generalizations of the Clausius–Clapeyron equation, valid with accuracy of 0.1%–1%, as demonstrated with 11 liquids: formic and acetic acids, methanol, ethanol, n-propanol, n-butanol, water, benzene, toluene, heptane, and isooctane. The model involves only readily available handbook parameters: the room-temperature heat of vaporization, vapor pressure, heat capacities, second virial coefficient, and heat of dissociation of the dimers in the gas phase.

中文翻译：

气相中的分子的蒸气压和蒸气化热

针对两种情况，提出了一种蒸汽压力与温度的关系模型，该模型中的蒸汽中含有缔合体的液体的汽化热为两种情况：气相中的二聚体和线性缔合体。结果是Clausius–Clapeyron方程的解析概括，精度为0.1％–1％，适用于11种液体：甲酸和乙酸，甲醇，乙醇，正丙醇，正丁醇，水，苯，甲苯，庚烷和异辛烷。该模型仅涉及易于获得的手册参数：室温下的汽化热，蒸汽压，热容量，第二维里系数和气相中二聚体的解离热。

更新日期：2018-04-16

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