2013/09/26 by Andjela B. Knežević-Stevanović, Andjela Knežević-Stevanović, Slobodan P. Šerbanović +3 · 2 citations
Chemical Engineering · Engineering · #Thermodynamic properties of mixtures #Phase Equilibria and Thermodynamics #Chemical and Physical Properties in Aqueous Solutions
paper · doi:10.1021/je4003916
Experimental densities ρ, refractive indices n D, and viscosity η data of the ternary dimethyladipate + tetrahydrofuran + 1-butanol and the binary tetrahydrofuran + 1-butanol systems have been determined, while viscosities have been measured for the binary dimethyladipate + 1-butanol system. The properties ρ, n D, and η are experimentally determined at eight temperatures over the temperature range T = (288.15 to 323.15) K and at atmospheric pressure, using instruments from Anton Paar: digital vibrating tube densimeter DMA 5000, refractometer RXA 156, and SVM 3000/G2 digital Stabinger viscometer. Excess molar volumes V E, deviations of refractive indices Δ n D, and deviations of viscosities Δη were calculated from the measured data. The Redlich–Kister equation is used to correlate excess molar volumes, deviations of refractive indices, and viscosities for binary mixtures, while the Nagata–Tamura equation is applied for a ternary mixture. FT-IR studies of the binary constituents of the investigated ternary mixture have also been carried out at T = 298.15 K.