Density Measurements under Pressure for the Binary System 1-Propanol + Toluene

Abstract

The density of the binary system composed of 1-propanol and toluene has been measured under pressure using a vibrating-tube densimeter. The measurements have been performed for four different compositions as well as the pure compounds at four temperatures in the range of (303.15 to 333.15) K and seven isobars up to 30 MPa. The uncertainty of the reported densities is less than 0.05%. The measured data has been used to study the influence of temperature, pressure, and composition on the isothermal compressibility and the isobaric thermal expansivity as well as the excess molar volume, which shows a complex sigmoid behavior involving both positive and negative values. This complex behavior has been interpreted as the result of changes in the free volume due to volume expansion and compressibility as a result of the breaking of hydrogen bonds of the self-associating alcohol molecules but also due to the electron donor-acceptor-type formation of hydrogen bonding between the hydroxyl group of 1-propanol and the π electrons of toluene because aromatic hydrocarbons can act as electron donors.

Experimental densities and derived thermodynamic properties of liquid propan-1-ol at temperatures from 298 to 423K and at pressures up to 40MPa

“…It can be seen that the majority of deviations are lower than ±0.1%, the average absolute deviation (AAD) is about 0.06% (see also Table 3). Most of the data by Zúñiga-Moreno and Galicia-Luna [53] show systematic negative deviations, although the deviations are very close [49]; ( ), [56]; ( ), [71]; (×), [58]; (⊗), [64]; ( ), [74]; (♦), [47]; (+), [65]; ( ), [73]; ( ), [61]; ( ), [70]; ( ), [62]; ( ), [33]; ( ), [72]; (♂), [76]; (♀), [32]; ( ), [75]; ( ), [35]; ( ), [36]; ( ), [21]; (--), calculated with correlation by Khasanshin [92]; (----), calculated with correlation by Marczak et al [47].…”

“…(17). (Right): ( ), this work; (᭹), [33]; ( ), [62]; (×), [65]; ( ), [24]; ( ), [142]; ( ), [4]; (+), [9]; (--), calculated with Eq. (17).…”

“…10 Fukuchi [30] 0.10 Kabir [56] 0.65 Azim [5] 0. 22 Zhuravlev [32] 0.14 Valtz [58] 0.08 Kretschmer [6] 0.14 Kubota [33] 0.08 Zéberg-Mikkelsen [62] 0.10 Ling [7] 0.09 Crabtree [35] 0.21 Yang [64] 0.40 Zakar'yaev [27] 0.21 Garcia [36] 0.13 Watson [65] 0.13 Westmeier [16] 0.13 Marczak [47] 0.06 Huo [72] 0.06 Li [73] 0.10 Pang [74] 0.07 Vercher [76] 0.11 Coquelet [71] 0.11 Gil-Hernandez [61] 0.11 Khasanshin [92] 0.09 Bhuiyan [70] 0.12 Zúñiga-Moreno and Galicia-Luna [53] 0.12 Golubev [10,19] 0.22 Benson [22] 0.06 Sakurai [31] 0.09 Gold [11] 0.11 Papaionannou [40] 0.001 Rodriguez [48] 0.06 Djojoputro [60] 0.10 Aminabhavi [39] 0.07 Resa [75] 0.09 Ortega [34] 0.08 Chandrashekara [20] 0.04 Tashima [26] 0.10 Marigliano [50] 0.09 Kumagi et al [45] 0.11 González [66] 0.10 Peleteiro [52] 0.07 ison between the present measured densities and the reported data at high temperatures and high pressures is presented in Figs. 3-5 and in Table 4. Figs.…”

Thermodynamic Properties of Propanol and Butanol as Oxygenate Additives to Biofuels

“…[16,56] that are above 5 MPa. The highest pressure, 30 MPa, is reported by Zeberg-Mikkelsen and "ndersen [56].…”

“…[16,56] that are above 5 MPa. The highest pressure, 30 MPa, is reported by Zeberg-Mikkelsen and "ndersen [56]. Temperatures above 350 K are only measured by Zawisza and Vejrosta [16].…”