Volumetric properties of binary mixtures of tetrahydrofuran, dimethyl adipate, 1-butanol and 2-butanol from (288.15 to 323.15) K and modeling by Prigogine-Flory-Patterson (PFP) and Extended Real Association Solution (ERAS) models
| Autor: | Andjela B. Knežević-Stevanović, Ivona R. Radović, Mirjana Lj. Kijevčanin, Nikola D. Grozdanić |
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| Rok vydání: | 2021 |
| Předmět: |
Molar excess volume
Materials science Thermodynamics 02 engineering and technology 010402 general chemistry 01 natural sciences Heat capacity chemistry.chemical_compound Molar volume 020401 chemical engineering Adipate Speed of sound Materials Chemistry Binary system 0204 chemical engineering Physical and Theoretical Chemistry Spectroscopy 2-Butanol Prigogine-flory-patterson theory Ultrasonic speed of sounds ERAS model Condensed Matter Physics Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry Isobaric molar heat capacities Compressibility Isobaric process |
| Zdroj: | Journal of Molecular Liquids |
| Popis: | In this work, experimental densities data of the binary system tetrahydrofuran + 2-butanol have been determined at eight temperatures, T=(288.15–323.15) K and atmospheric pressure and used for excess molar volume calculations. Also, partial molar volumes, excess partial molar volumes and partial molar volumes at infinite dilutions were calculated for further non-ideal behaviour of binary mixture. Excess molar volume, VE, of experimental determined system tetrahydrofuran + 2-butanol, and four previously published binary systems, tetrahydrofuran + 1-butanol, dimethyl adipate + 1-butanol, dimethyl adipate + 2-butanol and dimethyl adipate + tetrahydrofuran were correlated with two models, Prigogine-Flory-Patterson (PFP) and Extended Real Association Solution (ERAS). In order to apply the proposed models additional data of ultrasonic speed of sounds for pure components, dimethyl adipate, tetrahydrofuran, 1-butanol and 2-butanol, were measured in the temperature range T=(288.15–323.15) K and at atmospheric pressure. Volumetric coefficients, thermal expansion coefficient α and isothermal compressibility κ were calculated from density, ultrasonic speed of sound and isobaric heat capacity data. Isobaric molar heat capacities Cp,m at all temperatures for all pure components were obtained by correlation of literature data. Both models, PFP and ERAS were used for analysis of molecular interactions present in the investigated solutions. |
| Databáze: | OpenAIRE |
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