文献类型：期刊文献

中文题名：醇类液体的热压力系数及内压

英文题名：Thermal Pressure Coefficient and Internal Pressure for Alcohol Liquids

作者：李继敏[1];朱良[1];史济斌[1];黑恩成[1];刘国杰[1]

机构：[1]华东理工大学化学系,上海200237

年份：1995

卷号：53

期号：1

起止页码：1

中文期刊名：化学学报

外文期刊名：Acta Chimica Sinica

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助课题

语种：中文

中文关键词：醇;缔合液体;内压;范德华模型;热压力系数

摘要：本文测定25～85℃温度范围内正戊醇、正己醇、正庚醇和正辛醇的热压力系数,发现这些醇类液体的内压几乎不随温度而变.本文还将修正的van der Waals模型推广到了醇类液体,与非缔合液体一样,它们的排斥体积亦与密度呈线性关系.但是,模型参数之比B/A^2不再是个常数,而是随醇分子中碳原子数的增多而快速地减小,这个比值可作为自缔合能力的一种量度.
The thermal pressure coefficients of liquids for 1-pentanol, 1-hexanol, 1-heptanol and 1-octanol have been measured over the temperature range of 25-85℃. It is found that their internal pressures don't almost vary with temperature. The modified van der Waals model is applied to the alcohol liquids. As non-associating liquids, their excluded volume can also be expressed as a linear function of density. However, the ratio of the model parameters, B/A2 is nota constant and decreases speedily with increase of the number of carbon atoms in the alcohol molecule. This ratio may be considered as a measure of the ability of self-association for alcohols.