Measurement and correlation of excess enthalpies for water+ethanol+1-buthyl 3-methylimidaozolium tetrafluoroborate system
| Autor: | Seong-Sik You, Mun Hyeong Lee |
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| Rok vydání: | 2017 |
| Předmět: |
UNIQUAC
General Chemical Engineering Thermodynamics 02 engineering and technology General Chemistry Entropy of mixing Flory–Huggins solution theory 021001 nanoscience & nanotechnology Dissociation (chemistry) Isothermal process chemistry.chemical_compound 020401 chemical engineering chemistry Ionic liquid Non-random two-liquid model Vapor–liquid equilibrium 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Korean Journal of Chemical Engineering. 34:2027-2032 |
| ISSN: | 1975-7220 0256-1115 |
| DOI: | 10.1007/s11814-017-0081-6 |
| Popis: | It is difficult to find physical properties data for systems containing ionic liquids, excess molar enthalpies, binary interaction parameter, etc. In this study, the excess molar enthalpies were measured for water+ethanol+ionic liquid system using a isothermal microcalorimeter at 298.15 K. The ionic liquid used was 1-butyl 3-methyl imidazolium tetrafluoroborate, [BMIM] [BF4]. The isothermal microcalorimeter (IMC) is a flow-type calorimeter that measures the heat of mixing directly, using specific mixing cell. By employing NRTL, electrolyte-NRTL and UNIQUAC models, binary interaction parameters were determined and investigated for the correlation with vapor liquid equilibrium (VLE). The e-NRTL model with the partial dissociation was employed to correlate the ionic liquid system. The binary data of VLE system were used from literatures. Specifically, UNIQUAC volume and surface area parameters were determined using Bondi radius. |
| Databáze: | OpenAIRE |
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