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用Calvet微量热仪测定了正辛烷—正辛醇、正辛烷—正庚醇、正辛烷-异丙醇及正壬烷-仲丁醇、正壬烷-异丙醇五个二元物系在297.95K、常压下的过量焓H~E数据.用纠正后的QCSM缔合溶液模型对烃-醇物系氢键缔合对过量焓的影响进行了研究.对AGSM基团贡献模型进行了改进,引入了一个“修正参数”.修正后的AGSM模型对短分子链的醇与烷烃的过量焓的预测结果有明显的改善.
The content of n-octanol, n-octanol, n-heptanol, n-octane-isopropanol and n-nonane-sec-butanol and n-nonane-isopropanol were measured by Calvet microcalorimeter The data of excess enthalpy H ~ E at 297.95K and atmospheric pressure were used to study the influence of hydrogen bond association on excessive enthalpy of hydrocarbon-alcohol system by using the corrected QCSM association solution model. The model is improved by introducing a “correction parameter.” The modified AGSM model has shown a significant improvement in the prediction of the excess enthalpy of short-chain alcohols and alkanes.