Volumetric behaviour of binary mixtures of (trichloromethane+amines) at temperatures between T=(288.15 and 303.15)K at p=0.1MPa (original) (raw)
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Volumetric Behavior of Binary Mixtures of Alkoxyethanols and Some Selected Amines at 298.15 K
Journal of Thermodynamics, 2015
Densities of binary mixtures of 2-methoxyethanol (2-MeO-EtOH) and 2-ethoxyethanol (2-EtO-EtOH) with hexylamine (HLA), diethylamine (DEA), triethylamine (TEA), tert-butylamine (TBA), aniline (ANL), and benzylamine (BLA) have been determined at varying compositions of the alkoxyalkanols at 298.15 K. The excess molar volumes, VE, of the binary mixtures were calculated from the experimental density data of the mixtures and the component single solvents. The calculated excess molar volumes were fitted into the Redlich-Kister polynomial to obtain the fitting coefficients and standard deviations. The excess molar volumes of the binary mixtures of all the solvent systems investigated were negative over the entire range of the solvents composition. The negative values were attributed to stronger hydrogen bond formations between the unlike molecules of mixtures than those between the like molecules of the pure components. The magnitude of the excess molar volumes of the binary mixtures of 2-methoxyethanol and the aliphatic amines were in the order TBA > TEA > DEA > HEA. For the two aromatic amines, the magnitudes were in the order BLA > ANL. For binary mixtures of the amines and 2-ethoxyethanol, the magnitudes were in the order DEA > TEA > TBA > HEA at compositions where the mole fraction of 2-EtO-EtOH was ≤0.5 and TBA > TEA > DEA > HEA above 0.5 mole fraction of 2-EtO-EtOH.
Thermochimica Acta, 2009
Experimental densities and excess molar volumes V E of one ternary and three binary systems containing 1-butanol, cyclohexylamine and n-heptane at temperatures from 283.15 to 323.15 K are reported. Density measurements were performed by an Anton Paar DMA 5000 vibrating tube densimeter. The obtained V E of binary systems were fitted to the Redlich-Kister equation, and to the Nagata-Tamura equation for the ternary system. For the correlation of V E data of binary systems van der Waals (vdW1) and Twu-Coon-Bluck-Tilton (TCBT) mixing rules coupled with the Peng-Robinson-Stryjek-Vera (PRSV) equation of state were applied. The same models were applied for the prediction and correlation of V E data of the ternary system. In addition, several empirical relationships were applied for the prediction of V E data of the ternary system from the corresponding binary data. The obtained results have been analysed in terms of specific molecular interactions present in the investigated mixtures taking into considerations the effect of temperature increasing on present interactions.
Journal of Chemical & Engineering Data, 2008
Densities and Excess Molar Volumes of the Ternary Mixture 2-Butanol + Chloroform + Benzene and Binary Mixtures 2-Butanol + Chloroform, or + Benzene over the Temperature Range (288.15 to 313.15) K Densities F and excess molar volumes V E of the 2-butanol + chloroform + benzene ternary mixtures and two binaries, 2-butanol + chloroform and 2-butanol + benzene, have been determined. Experimental F measurements have been performed at six temperatures, (288.15, 293.15, 298.15, 303.15, 308.15, and 313.15) K, and atmospheric pressure with an Anton Paar DNA 5000 digital vibrating tube densimeter. Excess molar volumes V E were correlated by the Redlich-Kister equation for binary mixtures and the Nagata-Tamura equation for ternary mixtures.
Fluid Phase Equilibria, 2002
Densities of the mixture {water (1) + N-methylurea (2)} in the concentration range to mole fraction x 2 = 0.07071 (or to the solution molality concentration m 2 = 4.22335 mol•kg −1) at atmospheric pressure in the temperature range from 274.15 to 333.15 K and compression k = ΔV/V 0 at pressures to 100 MPa (10, 25, 50, 75, and 100) in the temperature range from 278.15 to 323.15 K (278.15, 288.15, 288.15, 308.15, 323.15) in the same concentration range were calculated in this study. The apparent molar volumes of N-methylurea V ϕ,2 and the partial molar volumes of both components V̅ 1 and V̅ 2 in the mixture, molar isothermal compressibilities K T,m , molar isobaric thermal expansions E P,m , and isochoric coefficients of thermal pressure β of the mixture were calculated. Moreover, volumetric measures for the infinitely dilute solution of N-methylurea solution were calculated: limiting partial molar volumes V̅ 2 ∞ , the limiting partial molar isothermal compressibilities K̅ T,2 ∞ , and the limiting partial molar isobaric thermal expansions E̅ P,2 ∞. The results obtained are discussed from the point of view of solute−solvent and solute−solute interactions.
International Journal of Thermophysics, 2008
Densities ρ of the 1-butanol + chloroform + benzene ternary mixture and the 1-butanol + chloroform and 1-butanol + benzene binaries have been measured at six temperatures (288.15, 293.15, 298.15, 303.15, 308.15, and 313.15) K and atmospheric pressure, using an oscillating U-tube densimeter. From these densities, excess molar volumes (V E ) were calculated and fitted to the Redlich-Kister equation for all binary mixtures and to the Nagata and Tamura equation for the ternary system. The Radojković et al. equation has been used to predict excess molar volumes of the ternary mixtures. Also, V E data of the binary systems were correlated by the van der Waals (vdW1) and Twu-Coon-Bluck-Tilton (TCBT) mixing rules coupled with the Peng-Robinson-Stryjek-Vera (PRSV) equation of state. The prediction and correlation of V E data for the ternary system were performed by the same models.
Journal of Solution Chemistry, 1994
We have rneasured densbies of binary mixtures of water with monaetlnnolamine (MEA), diethanolamine (DEA), and triethanolarnine (TEA) over the full range of compositions and over the temperature range froru 25 to 80"C. Results of these tneasurernents lnve been used in calculating excess molar volumes and partial molar volumes. Krawledge of the volumetric properties of these mirtwes is useful in conncction with industrial treatment of acidic gases; derived excess rnolar volumes and partial molar volumes can be used as a bosis for undcrstanding some of the twl ec ular interactions in water -or ganic mirtures.
Journal of Molecular Liquids, 2003
Excess molar volumes (V m E) of binary liquid mixtures: xC 6 H 5 CH 3 + (1-x 1)CH 3 CN or + (1-x 1)C 6 H 5 NO 2 , or + (1-x 1)C 2 H 5 NO 2 have been determined as a function of mole fraction of C 6 H 5 CH 3 (x) at a temperature of 303.15 K over a entire range of composition. The densities of the binary liquid mixtures were determined by pycnometrically. The V m E values of the mixtures have been found to be negative over the whole composition in order of C 6 H 5 CH 3 + C 6 H 5 NO 2 , < C 6 H 5 CH 3 + CH 3 CN, and < C 6 H 5 CH 3 + C 2 H 5 NO 2. The negative magnitude of V m E suggests the presence of intermolecular interaction in the three binary liquid mixtures.
Thermodynamic study of (heptane+amine) mixtures. II. Excess and partial molar volumes at 298.15K
The Journal of Chemical Thermodynamics, 2011
Excess molar volumes V E at 298.15 K were determined by means of a vibrating tube densimeter for binary mixtures of heptane + primary n-alkyl (C 3 to C 10 ) and branched amines (iso-propyl-, iso-, sec-, and tert-butyl-, iso-, tert-pentyl-, and pentan-3-amine) in the whole composition range. The apparent molar volumes of solid dodecyl-and tetradecylamine in heptane dilute solution were also determined. The V E values were found positive for mixtures involving C 3 to C 8 linear amines, with V E decreasing with chain lengthening. Heptane + nonyl and decylamine showed s-shaped, markedly asymmetric, curves. Mixtures with branched C 3 to C 5 amines displayed positive V E 's larger than those observed in the mixtures of the corresponding linear isomers. Partial molar volumes V°at infinite dilution in heptane were evaluated for the examined amines and compared with those of alkanes and alkanols taken from the literature. An additivity scheme, based on the intrinsic volume approach, was applied to estimate group (CH 3 , CH 2 , CH, C, NH 2 , and OH) contributions to V°. The effect of branching on V°and the limiting slope of the apparent excess molar volumes were evaluated and discussed in terms of solute-solvent and solute-solute interactions.
J Solut Chem, 1994
We have rneasured densbies of binary mixtures of water with monaetlnnolamine (MEA), diethanolamine (DEA), and triethanolarnine (TEA) over the full range of compositions and over the temperature range froru 25 to 80"C. Results of these tneasurernents lnve been used in calculating excess molar volumes and partial molar volumes. Krawledge of the volumetric properties of these mirtwes is useful in conncction with industrial treatment of acidic gases; derived excess rnolar volumes and partial molar volumes can be used as a bosis for undcrstanding some of the twl ec ular interactions in water -or ganic mirtures.