Temperature Dependence of Limiting Activity Coefficients, Henry's Law Constants, and Related Infinite Dilution Properties of Branched (C3 and C4) Alkanols in Water. Measurement, Critical Compilation, Correlation, and Recommended Data
| Autor: | Vladimír Dohnal, Dana Fenclová, Vaclav Lastovka, Pavel Vrbka |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Journal of Chemical & Engineering Data. 52:989-1002 |
| ISSN: | 1520-5134 0021-9568 |
| DOI: | 10.1021/je600567z |
| Popis: | Limiting activity coefficients ( ) of lower branched alkanols (2-propanol, 2-butanol, 2-methyl-1-propanol, and 2-methyl-2-propanol) in water were measured at several temperatures covering the range from the melting to the normal boiling point of water. Four experimental techniques (namely, headspace analysis, inert gas stripping, Rayleigh distillation, and the method of circulation still) were employed for the purpose. A comprehensive review is further presented of experimental data on the limiting activity coefficients ( ), infinite dilution partial molar excess enthalpies ( ), and heat capacities ( ) of these aqueous solutes. For each alkanol, the compiled data were critically evaluated and together with the data measured in this work correlated with a suitable model equation providing adequate simultaneous description of the equilibrium measurements and the calorimetric information. As a result, a recommended thermodynamically consistent temperature dependence of , , and of superior accuracy was establ... |
| Databáze: | OpenAIRE |
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