估算纯物质蒸发焓的新方法  

A new method for predicting the enthalpys of vaporization of pure compounds

作　　者：梁英华[1] 张俊杰[1] 

机构地区：[1]河北理工学院化工系,河北唐山063009

出　　处：《河北理工学院学报》2001年第2期62-65,共4页Journal of Hebei Institute of Technology

基　　金：河北省教委博士基金资助项目

摘　　要：提出了估算纯物质在不同温度下蒸发焓的新方法——基团对应状态法 ,并引入拟临界温度的概念 ,该方法既有对应状态的广泛性又具有基团贡献法的简单性 ,仅需要物质的正常沸点数据。用 387种化合物的 1336个数据点回归出了方程的参数以及 6 5种基团对临界温度的贡献值。In the paper,a new estimation equation for predicting the enthalpy of vaporization was proposed by combining the corresponding-state theory and Group-contribution method.The new method not only retains the simplicity and accuracy of the group-contribution method,but also has the extensive predictability and flexibility of the corresponding-state method.The contribution values of 65 groups were obtained by correlating the 1336 experimental data of enthalpy of vaporization of 387 pure compounds.

关 键 词：纯物质 蒸发焓 基团贡献法 对应状态原理 临界温度 

分 类 号：TQ028.61[化学工程]