Liquid density of 1-pentanol at pressures up to 140 MPa and from 293.15 to 403.15 K

doi:10.1016/j.fluid.2008.06.007

Fluid Phase Equilibria

Volume 270, Issues 1–2, 25 August 2008, Pages 69-74

https://doi.org/10.1016/j.fluid.2008.06.007 Get rights and content

Abstract

This work reports new density data (180 points) of 1-pentanol at twelve temperatures between 293.15 and 403.15 K, and pressures up to 140 MPa (every 10 MPa). A new Anton Paar vibrating-tube densimeter, calibrated with an uncertainty of ±0.5 kg m⁻³ was used to perform these measurements. The experimental density data were fitted with the Tait-like equation with low standard deviations. In addition, the isobaric thermal expansivity and the isothermal compressibility have been derived from the Tait-like equation.

Introduction

In a recent article (Zuñiga-Moreno et al., [1]) it has been underlined that accurate PVT properties of pure compounds are required to develop and test Equation of states (EoS). The authors stressed that the evaluation of experimental properties data has become of high importance in the scientific community. Moreover, for the optimized design of several industrial processes, reliable experimental data are needed. Among others, volumetric properties such as density and its derived properties are important thermodynamic properties which characterize chemical compounds. These quantities provide important information on the behavior of pure liquids useful for the understanding of the molecular interactions.

More particularly, the authors [1] made new measurements concerning densities of 1-pentanol. Nevertheless these new measurements have been restricted to pressure equal to or lower than 25 MPa, in a narrow temperature interval, from 313.1 to 362.5 K. To extend this previous work, in order to give more information about 1-pentanol density we present here results obtained up to 140 MPa from 293.15 to 403.15 K, with an uncertainty of around 0.05% (i.e. 0.5 kg m⁻³). In addition the isobaric thermal expansivity, α_p = −(1/ρ)(∂ρ/∂T)_P, and isothermal compressibility, κ_T = (1/ρ)(∂ρ/∂p)_T, have also been derived.

The density values obtained in the present work will be compared with previous literature data. Liquid densities for 1-pentanol at high pressure have been measured by [1], Bridgman [2], Walsh and Rice [3], Sahli et al. [4], Gylmanov et al. [5], Zolin et al. [6], Altunin and Konikevich [7], Garg et al. [8], Wappman et al. [9], Sulzner and Luft [10]. The number of data points, range of temperature and pressure, compound purity, and the claimed uncertainty for the data reported by mentioned references are presented in Table 1. Notice that Table 1 is similar to the part concerning 1-pentanol of Table 1 in ref. [1], which authors have made a complete bibliographic analysis on the subject (high pressure density of 1-pentanol and 2-pentanol) except the fact that measurements of [1] about 1-pentanol have been added in the last row. As we can see the review of the currently available literature sources reveals that there is still a lack of information on the density of 1-pentanol. The database for thermophysical properties of this compound, at present, is scarce and limited. Notice that in [1] the uncertainty is 0.2 kg m⁻³ (i.e. around 0.02%) but with narrow pressure interval (up to 25 MPa) and in the recent studies [9], [10] the pressure interval is up to around 200 MPa but the uncertainty is only of the order of 0.4% (i.e. around 4 kg m⁻³) for ref. [10] and up to 0.6% (i.e. around 6 kg m⁻³) for ref. [9]. It is also worth to mention that in 1993 and 1994, Cibulka and Zikova [11], [12] made a critical evaluation of experimental data for liquid density of some 1-alkanols, completed in 1997 for higher 1-alkanols (Cibulka et al., [13]). Their review about 1-pentanol [11], [12] included papers published up to 1993 [2], [3], [5], [6], [8]. Nevertheless, as the values obtained by extrapolating at high pressure, or high temperature measurements already done, may be uncertain, it is useful to get additional experimental measurements.

In addition, the study of this compound presents obvious industrial interest in engineering applications and it also presents fundamental aspects as 1-pentanol is highly polar and very associative compound. We can expect that these experimental data will be valuable for testing various theoretical models attempting to take into account the polar and associating effects between molecules.

Section snippets

Materials

1-Pentanol (C₅H₁₂O, molar mass 88.15 g mol⁻¹, CAS-RN: 71-41-0) was obtained from Sigma–Aldrich with purity of 99% (with certificate of analysis by gas chromatography of respectively 99.5%). This chemical was subject to no further purification and directly injected into the high pressure cell as soon as the bottle was opened.

Measurement technique. Experimental procedure

An Anton Paar DMA HPM high pressure vibrating-tube densimeter was used to measure the density ρ as a function of pressure p (up to 140 MPa) and temperature T (between 293.15

Results

The measured densities of 1-pentanol are reported in Table 2 along the 12 isotherms between 293.15 and 403.15 K at pressures up to 140 MPa (15 isobars). Our data have been compared with the correlation given in [12]. This review covers papers published before 1993 [2], [3], [5], [6], [8] and the majority of the data points are below 60 MPa (236 values). For pressures above 60 MPa (20 data points) the temperature is between 292.15 and 448.15 K, but at very high pressures between 980.6 and 11590 MPa.

The derived thermodynamic properties

The temperature and pressure dependence of the isothermal compressibility, κ_T, is obtained from Equation (1) and is expressed as follows: $κ_{T} = (\frac{1}{ρ}) {(\frac{\partial ρ}{\partial p})}_{T} = \frac{C}{(1 - C \ln ((B (T) + p) / (B (T) + 0.1 MPa))) (B (T) + p)}$ Similarly the isobaric thermal expansivity could also be obtained analytically by differentiating Eq. (1) taking into account the temperature dependence of ρ₀(T) and B(T). But as Cerdeiriña et al. [29] and Troncoso et al. [30] mention, the estimated isobaric thermal expansivity depends on the form of

References (36)

B.P. Sahli et al.
J. Chem. Thermodyn.
(1976)
I. Cibulka
Fluid Phase Equilib.
(1993)
Y. Miyake et al.
Fluid Phase Equilib.
(2007)
Y. Miyake et al.
J. Chem. Therm.
(2008)
J. Troncoso et al.
Fluid Phase Equilib.
(2003)
G. Watson et al.
Fluid Phase Equilib.
(2006)
A. Zuñiga-Moreno et al.
Int. J. Thermophys.
(2007)
P.W. Bridgman
Proceed. Am. Acad. Arts Sci.
(1942)
J.M. Walsh et al.
J. Chem. Phys.
(1957)
A.A. Gylmanov et al.
Izvestia vyssih ucebnyh zavedenij. Neft i gaz
(1979)

V.S. Zolin et al.

Trudy GIAP

(1979)

V.V. Altunin et al.

Teplofiz. Svoistva veshchestv i Materialov

(1980)

S.K. Garg et al.

J. Chem. Eng. Data

(1993)

S. Wappmann et al.

J. Chem. Eng. Data

(1995)

U. Sulzner et al.

Int. J. Thermophys.

(1997)

I. Cibulka et al.

J. Chem. Eng. Data

(1994)

I. Cibulka et al.

J. Chem. Eng. Data

(1997)

G. Watson et al.

J. Chem. Eng. Data

(2006)

Cited by (56)

Liquid density of binary mixtures of n-pentane and n-dodecane at temperatures from 283K to 363K and pressures up to 100MPa
2024, Fluid Phase Equilibria
The compressed liquid densities of n-pentane(1) + n-dodecane(2) binary mixtures were measured using a high pressure vibrating-tube densimeter at temperatures from 283 K to 363 K, pressures up to 100 MPa, and five different compositions (x₁ = 0.3778, 0.6230, 0.7968, 0.9051, and 1). The densities of binary mixtures were correlated using the modified Tait equation, and the absolute average deviations of the experimental and calculated values were 0.010 %, 0.019 %, 0.016 %, 0.025 %, and 0.017 %, respectively. In addition, the isothermal compressibility and the isobaric thermal expansivity were calculated from the obtained densities.
Viscosities and densities of different alcohols (1-propanol, 2-propanol, 1-pentanol and 2-pentanol) at high pressures
2021, Journal of Molecular Liquids
High pressure viscosity data are necessary to complement fluid characterization, but their accurate determination is always a challenge due to the lack of these data. This work focuses on characterizing four alcohols (1-propanol, 2-propanol, 1-pentanol and 2-pentanol) through viscosity measurements using two different equipment: a falling body viscometer and a vibrating wire viscometer. Both techniques can measure up to 100 MPa, with relative expanded uncertainties (k = 2) of 3.5% and 1.5%, respectively. Since both viscometers need, as an input data, density of the measured compounds, a vibrating tube Anton Paar DMA-HPM densimeter is used to determine their densities in the same ranges of pressure and temperature with an expanded uncertainty (k = 2) of 0.70 kg·m⁻³. Finally, the experimental data are fitted to Tammann-Tait equation for densities and VFT model for viscosities obtaining standard deviations within the uncertainty of the measurements.
Study of volume properties of N, N-dimethylcyclohexylamine and alcohols binary mixtures at different temperatures and 0.1 MPa
2021, Journal of Chemical Thermodynamics
In this work, the densities of six binary mixtures containing N, N-dimethylcyclohexylamine (DMCHA) and n-pentanol, n-hexanol, n-heptanol, n-octanol, n-nonanol or n-decanol were measured at temperatures from (288.15 to 323.15) K and 0.1 MPa, over the full range of composition. Molar volume ( $V_{m}$ ), thermal expansion coefficient ( $α_{p}$ ), excess molar volume ( $V_{m}^{E}$ ), apparent molar volume ( $V_{φ}$ ), apparent molar volume at infinite dilution ( $V_{φ}^{\infty}$ ), partial molar volume ( $\bar{V}$ )and excess partial molar volumes ( ${\bar{V}}^{E}$ ) were calculated according to experimental density values. The results show that $V_{m}^{E}$ values are negative ranging from (-1.0896 to 0) cm³·mol⁻¹ and the minimum is observed around DMCHA mole fraction of 0.4 for all studied systems and temperatures. The variation of $V_{m}^{E}$ value with composition and temperature were discussed and explained from molecular size and intermolecular interactions, namely dispersion forces and hydrogen bonds between DMCHA and alcohol. Furthermore, $V_{m}^{E}$ values were also correlated using Redlich-Kister polynomial equation with the largest deviation of 0.019.
Molecular interactions in liquid mixtures containing o-cresol and 1-alkanols: Thermodynamics, FT-IR and computational studies
2020, Journal of Molecular Liquids
To investigate the nature and class of association forces between the pure liquids and their liquid mixtures, we have been analyzed with excess thermodynamic properties, spectroscopic and computational techniques. Although, the thermodynamic parameters such as excess volume (V^E), isentropic compressibility (k_s) and excess isentropic compressibility (k_s^E) have been calculated using the experimental data of density (ρ) and speeds of sound (u) of o-cresol with 1-alkanols (C₃–C₈) namely, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol and 1-octanol at different temperatures from 25 to 40 °C with interval of 5 °C and at 0.1 MPa. The calculated excess and deviation functions have been fitted to the Redlich-Kister polynomial equation and the results have been analyzed in terms of molecular interactions and structural effects. However, the FT-IR data strongly supports the presence of intra- and inter molecular interactions between component molecules in the liquid mixtures through changing the stretching vibrational frequency of various functional groups of pure liquids. In addition, the hydrogen bonding features between o-cresol with different 1-alkanols were examined by using a molecular modeling program with the help of density functional theory (DFT - B3LYP), the optimized geometries, bond characteristics, natural bond orbital (NBO) and interaction energies of pure components and their complexes have been analyzed theoretically to recognize the nature and strength of interactions between o-cresol and 1-alkanols.
Compressed liquid densities of binary mixtures of difluoromethane (R32) and 2,3,3,3-tetrafluoroprop-1-Ene (R1234yf) at temperatures from (283 to 363) K and pressures up to 100 MPa
2020, Journal of Chemical Thermodynamics
The compressed liquid densities of binary mixtures difluoromethane (R32) and 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) were measured using a high pressure vibrating-tube densimeter over the temperatures from (283 to 363) K and pressures up to 100 MPa at five different compositions, x_R32 = (0.189, 0.268, 0.500, 0.723, 0.904) in the present work. The combined expanded uncertainties of the temperature, pressure, mole fraction and the density with a level of confidence of 0.95 (k = 2) is estimated to be 16 mK, 0.062 MPa (p ≤ 60 MPa), 0.192 MPa (60 MPa < p < 100 MPa), 0.01 and up to 0.6 kg·m⁻³ depending on the temperature and pressure ranges, respectively. The experimental data were correlated using the modified Tait equation. The isothermal compressibility, κ_T, and the isobaric thermal expansivity, α_p, were determined using liquid densities of mixtures and modified-Tait equation. Furthermore, the relative deviations of the experimental data with the equation of state (EOS) from Akasaka were lower than 1% from (283 to 363) K with the pressure up to 40 MPa.
Density and viscosity for binary mixtures of methyl decanoate with 1-propanol, 1-butanol, and 1-pentanol
2019, Journal of Molecular Liquids
In this work, the volumetric and viscometric properties of the mixtures of methyl decanoate with 1-propanol, 1-butanol, and 1-pentanol were investigated from 298.15 K to 333.15 K. The density data of the mixtures were obtained based on the vibrating-tube densimeter, and the kinematic viscosities of the mixtures were measured using the Ubbelohde capillary viscometer. Based on the experimental data, the excess molar volumes and viscosity deviations were calculated and correlated with the Redlich–Kister equation. In addition, the McAllister four-body model, Frenkel model, Grunberg-Nissan model, and Heric's model were used to correlate the viscosities of the mixtures.

View all citing articles on Scopus

View full text

Liquid density of 1-pentanol at pressures up to 140 MPa and from 293.15 to 403.15 K

Abstract

Introduction

Section snippets

Materials

Measurement technique. Experimental procedure

Results

The derived thermodynamic properties

J. Chem. Thermodyn.

Fluid Phase Equilib.

Fluid Phase Equilib.

J. Chem. Therm.

Fluid Phase Equilib.

Fluid Phase Equilib.

Int. J. Thermophys.

Proceed. Am. Acad. Arts Sci.

J. Chem. Phys.

Izvestia vyssih ucebnyh zavedenij. Neft i gaz

Trudy GIAP

Teplofiz. Svoistva veshchestv i Materialov

J. Chem. Eng. Data

J. Chem. Eng. Data

Int. J. Thermophys.

J. Chem. Eng. Data

J. Chem. Eng. Data

J. Chem. Eng. Data