Isobaric (vapor + liquid) equilibria for the binary systems (1-methoxy-2-propanol + 2-methoxyethanol), (2-butanone + 2-methoxyethanol) and (water + 2-methoxyethanol) at pressures of (74.5, 101.3, and 134.0) kPa |
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| Institution: | 1. Department of Chemical and Environmental Engineering, Universidad Técnica Federico Santa María, Avda. España 1680, Valparaíso, Chile;2. Regional Center for the Study of Healthy Foods, Blanco 1623, Valparaíso, Chile;1. Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Saxony-Anhalt, Germany;2. Department of Physical Chemistry, Kazan Federal University, Kazan, Tatarstan, Russia;3. Department of Physical Chemistry and Department “Science and Technology of Life, Light and Matter,” University of Rostock, Rostock, Mecklenburg-Vorpommern, Germany;1. Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, P-4169-007 Porto, Portugal;2. Department of Chemistry and Biochemistry, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA;1. Department of Food Engineering, URI, Campus de Erechim, Av. Sete de Setembro, 1621, Erechim-RS 99700-000, Brazil;2. Federal University of Fronteira Sul, Erechim, Av. Dom João Hoffmann, Erechim 99700-000, Brazil;3. Department of Chemical Engineering, Federal University of Paraná (UFPR), Polytechnic Center, Jardim das Américas, Curitiba 82530-990, PR, Brazil;4. Department of Engineering, Federal University of Santa Maria, Cachoeira do Sul, Brazil;5. Department of Chemical and Food Engineering, Federal University of Santa Catarina, P.O. Box 476, 88040-900 Florianópolis, SC, Brazil |
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| Abstract: | Isobaric (vapor + liquid) equilibria of three binary systems (1-methoxy-2-propanol + 2-methoxyethanol), (2-butanone + 2-methoxyethanol) and (water + 2-methoxyethanol), was measured using an apparatus with dynamic recirculation and gas chromatography analysis for both phases. The measurements were carried out at pressures of (74.5, 101.3, and 134.0) kPa and temperature ranged from (343 to 407) K. No partial liquid miscibility was observed for any of the systems studied. Azeotropic behavior was verified for the system (water + 2-methoxyethanol) at the water-rich region. Thermodynamic modeling of the data measured was successfully accomplished for (2-butanone + 2-methoxyethanol) and (water + 2-methoxyethanol). In order to represent the no-ideality of the liquid phase, three alternatives for the activity coefficient model were used, Non Random Two Liquid, van Laar and Wilson. Results showed that the relative root mean square deviations from the experimental molar fractions were, <12% for the vapor phase, and <1% for the liquid phase. |
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| Keywords: | Isobaric vapor liquid equilibria Glycol ethers 1-methoxy-2-propanol 2-methoxyethanol 2-butanone Water Experimental values Thermodynamic modeling |
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