Title: Thermodynamic properties of (a butyl ester + an -alkane). XIII. and for {}, where= 1 to 3 and= 1 to 7
Abstract: In the framework of a series of studies carried out by our research team, the excess molar enthalpies HmEand excess molar volumes VmEfor 21 binary mixtures composed of one of three butyl esters (ethanoate, propanoate, and butanoate) and one of seven odd n -alkanes (pentane to heptadecane) were determined experimentally at T = 298.15 K. Experimentation showed the mixing processes for these systems to be endothermic, with the HmEvalues varying quasi-linearly with n -alkane chain length; there is also a regular variation in the VmEvalues, though the mixtures of the three butyl esters with pentane presented contraction effects with values of VmEthat were more negative than expected. The most probable molecular interactions taking place in (ester + n -alkane) systems are discussed. Comparison of the experimental results with certain theoretical group-contribution models showed that differences in the estimates increased with increasing molar mass of the mixture components, indicating a need to improve modeling by adapting the models so that they more closely reflect the special circumstances that affect the behaviour of the mixtures in question.
Publication Year: 2000
Publication Date: 2000-08-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 28
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot