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- W3212030147 endingPage "856" @default.
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- W3212030147 abstract "Ionic liquids are used in different processes owing to their low vapor pressure, large viscosity range, chemical and thermal stability, and superior conductance even without water. These features make them flexible and tunable, indicating their possible use as substitutes for commonly used compounds in many processes. The objective of this study was to evaluate the properties of aqueous binary solutions for three different ionic liquids (ILs): dibutylammonium acetate, dibutylammonium propanoate, and dibutylammonium butanoate. The measured properties were density, speed of sound, and conductivity, and their isentropic compressibility and thermal expansion coefficient were calculated based on these properties. The temperature range used for measurements was 293.15–323.15 K. Mathematical models were used for each ionic liquid + water mixture to fit the density and speed of sound data. The increase in the alkyl chain leads to a tendency to decrease the values of density, speed of sound, and conductivity of the solutions. However, decreasing the dilution in water, the density, the conductivity and the speed of sound initially increase and then decrease, exhibiting a maximum in the initial water concentration range which indicates the formation of aggregates. Critical micellar concentrations at 298 K were determined through conductivity data. Enhancing the temperature leads to a decrease on density and sound velocity." @default.
- W3212030147 created "2021-11-22" @default.
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- W3212030147 date "2021-11-15" @default.
- W3212030147 modified "2023-10-15" @default.
- W3212030147 title "Physical and chemical properties of binary mixtures of dibutylammonium-based ionic liquids and water" @default.
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- W3212030147 doi "https://doi.org/10.1007/s43153-021-00174-7" @default.
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