Density, Refractive Index, and Speed of Sound at 298.15 K and Vapor−Liquid Equilibria at 101.3 kPa for Binary Mixtures of Ethyl Acetate + 1-Pentanol and Ethanol + 2-Methyl-1-propanol

Abstract

Densities, refractive indices, and speeds of sound at 298.15 K and isobaric vapor−liquid equilibria (VLE) data at 101.3 kPa were reported for the binary mixtures containing ethyl acetate + 1-pentanol and ethanol + 2-methyl-1-propanol. Excess molar volumes, refractive index deviations, and changes of speed of sound on mixing were calculated from the measurement results that were fitted with Redlich−Kister polynomials. VLE experimental data were tested for thermodynamic consistency by means of a modified Dechema test and were demonstrated to be consistent. The activity coefficients were correlated with the Margules, van Laar, UNIQUAC, nonrandom two-liquid, and Wilson equations. The analytical solution of groups model also was used for prediction.

Influence of temperature on ultrasonic velocity measurements of ethanol + water + ethyl acetate mixtures

“…The difficulties of simulation in these types of processes have been commented upon previously [1]. As a continuation of previous works related to alcoholic beverage components [2,3], we present in this article the temperature dependence of the isentropic compressibilities of the mixture ethanol þ water þ ethyl acetate at the range 288.15-323.15 K and at atmospheric pressure, as a function of molar fraction. From the experimental values, the excess molar volumes were computed, a temperature-dependent Cibulka type polynomial being fitted to the results [3,4].…”

“…where the binary magnitudes Q ij have been correlated to equation (2) and Á 123 is the ternary contribution fitted by means of a modified Cibulka equation [3,4]:…”

Densities and Excess Molar Volumes of 2-Butanol + Cyclohexanamine + Heptane and 2-Butanol + n-Heptane at Temperatures between (288.15 and 323.15) K

“…Table 1 lists the densities measured for pure 2-butanol, cyclohexanamine, and heptane, which agree to within ( 1.5 · 10 -5 with the literature values. [9][10][11] Measurements. Densities F of the ternary and binary mixtures and corresponding pure substances were measured with an Anton Paar DMA 5000 digital vibrating U-tube densimeter (with automatic viscosity correction) having a stated uncertainty of ( 5 · 10 -6 g · cm -3 .…”

Design of dividing wall columns for butanol recovery in a thermochemical biomass to butanol process

“…Specifically, the binary vapor liquid equilibrium (VLE) data of the methanolisobutanol [32], ethanol-isobutanol [33], propanol-isobutanol [34], methanol-propanol [35], methanol-ethanol [36], ethanolpropanol [37] pairs were validated against experimental data. Furthermore, we note that the simulation did not detect two liquid phases using this model for any of the columns described in this study, and that there are no azeotropes present because of the very low water content in the feed.…”