Vapor–Liquid Equilibria of Water + Alkylimidazolium-Based Ionic Liquids: Measurements and Perturbed-Chain Statistical Associating Fluid Theory Modeling
| العنوان: | Vapor–Liquid Equilibria of Water + Alkylimidazolium-Based Ionic Liquids: Measurements and Perturbed-Chain Statistical Associating Fluid Theory Modeling |
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| المؤلفون: | Gabriele Sadowski, Imran Khan, Christoph Held, Pedro J. Carvalho, Fabrice Mutelet, Helena Passos, Mariana B. Oliveira, Luís M. N. B. F. Santos, Mara G. Freire, João A. P. Coutinho |
| المساهمون: | CICECO - Departemento de quimica, Universidade de Aveiro, Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Department of Biochemical and Chemical Engineering, Technische Universität Dortmund [Dortmund] (TU), Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL) |
| المصدر: | Industrial and engineering chemistry research Industrial and engineering chemistry research, American Chemical Society, 2014, 53 (9), pp.3737-3748. ⟨10.1021/ie4041093⟩ Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| بيانات النشر: | American Chemical Society (ACS), 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | Water activity, General Chemical Engineering, Thermodynamics, Flory–Huggins solution theory, Mole fraction, Chloride, Industrial and Manufacturing Engineering, AQUEOUS BIPHASIC SYSTEMS, chemistry.chemical_compound, 2ND VIRIAL COEFFICIENTS, Boiling, Phase (matter), INFINITE DILUTION MEASUREMENTS, medicine, [CHIM]Chemical Sciences, Organic chemistry, ORGANIC SOLUTES, PRESSURE MEASUREMENT, General Chemistry, EQUATION-OF-STATE, 6. Clean water, BINARY-SYSTEMS, chemistry, PHYSICOCHEMICAL PROPERTIES, Ionic liquid, DIRECTIONAL ATTRACTIVE FORCES, Isobaric process, THERMODYNAMIC PROPERTIES, medicine.drug |
| الوصف: | International audience; The industrial application of ionic liquids (ILs) requires the knowledge of their physical properties and phase behavior. This work addresses the experimental determination of the vapor-liquid equilibria (VLE) of binary systems composed of water + imidazolium-based ILs. The ILs under consideration are 1-butyl-3-methylimidazolium trifluoromethanesulfonate, 1-butyl-3-methylimidazolium thiocyanate, 1-butyl-3-methylimidazolium tosylate, 1-butyl-3-methylimidazolium trifluoroacetate, 1-butyl-3-methylimidazolium bromide, 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium methanesulfonate, and 1-butyl-3-methylimidazolium acetate, which allows the evaluation of the influence of the IL anion through the phase behavior. Isobaric VLE data were measured at 0.05, 0.07, and 0.1 MPa for IL mole fractions ranging between 0 and 0.7. The observed increase in the boiling temperatures of the mixtures is related with the strength of the interaction between the IL anion and water. The Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT) was further used to describe the obtained experimental data. The ILs were treated as molecular associating species with two association sites per IL. The model parameters for the pure fluids and the binary interaction parameter k(ij) between water and ILs were determined by a simultaneous fitting to pure-IL densities, water activity coefficients at 298.15 K and VLE data at 0.1 MPa. Pure-IL densities, water activity coefficients, and VLE data were well described by PC-SAFT in broad temperature, pressure, and composition ranges. The PC-SAFT parameters were applied to predict the water activity coefficients at infinite dilution in ILs, and a satisfactory prediction of experimental data was observed. |
| تدمد: | 1520-5045 0888-5885 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5deb22267f7d58af7c119239b291b52dTest https://doi.org/10.1021/ie4041093Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....5deb22267f7d58af7c119239b291b52d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15205045 08885885 |
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