High-pressure densities of n-decane+o-xylene mixtures: Measurement and modelling

Kai Kang, Shanshan Zhu, Xiaodong Liang, Georgios M. Kontogeorgis, Xiaopo Wang*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In this work, the liquid densities of n-decane/o-xylene mixtures were measured at four different component proportions, the mole fractions of n-decane are 0.2001, 0.4065, 0.5835, and 0.8041, respectively. The measurements were performed based on the high-pressure vibrating-tube densimeter, and the measured temperatures were from 283.15 K to 363.15 K and the pressures were from 0.1 MPa to 60 MPa. The Tammann-Tait equation was used to correlate the experimental densities, and the simplified Perturbed Associating Fluid Theory (sPC-SAFT) and Cubic Plus Associating (CPA) equation were used to predict the high-pressure densities of the mixtures with the binary interaction parameters. Derived properties, including isothermal compressibilities and isobaric thermal expansivities, were calculated from Tait equation, sPC-SAFT equation, and CPA equation, respectively. In addition, excess molar volumes of the considered mixtures were obtained and the effects of pressure and temperature on the excess molar volume were discussed.
Original languageEnglish
JournalFluid Phase Equilibria
Volume498
Pages (from-to)1-8
ISSN0378-3812
DOIs
Publication statusPublished - 2019

Keywords

  • EOS
  • High-pressure density
  • n-Decane
  • o-Xylene
  • Volumetric properties

Cite this

@article{3019498bdaab4b71af0a7cca5ee5c47e,
title = "High-pressure densities of n-decane+o-xylene mixtures: Measurement and modelling",
abstract = "In this work, the liquid densities of n-decane/o-xylene mixtures were measured at four different component proportions, the mole fractions of n-decane are 0.2001, 0.4065, 0.5835, and 0.8041, respectively. The measurements were performed based on the high-pressure vibrating-tube densimeter, and the measured temperatures were from 283.15 K to 363.15 K and the pressures were from 0.1 MPa to 60 MPa. The Tammann-Tait equation was used to correlate the experimental densities, and the simplified Perturbed Associating Fluid Theory (sPC-SAFT) and Cubic Plus Associating (CPA) equation were used to predict the high-pressure densities of the mixtures with the binary interaction parameters. Derived properties, including isothermal compressibilities and isobaric thermal expansivities, were calculated from Tait equation, sPC-SAFT equation, and CPA equation, respectively. In addition, excess molar volumes of the considered mixtures were obtained and the effects of pressure and temperature on the excess molar volume were discussed.",
keywords = "EOS, High-pressure density, n-Decane, o-Xylene, Volumetric properties",
author = "Kai Kang and Shanshan Zhu and Xiaodong Liang and Kontogeorgis, {Georgios M.} and Xiaopo Wang",
year = "2019",
doi = "10.1016/j.fluid.2019.06.014",
language = "English",
volume = "498",
pages = "1--8",
journal = "Fluid Phase Equilibria",
issn = "0378-3812",
publisher = "Elsevier",

}

High-pressure densities of n-decane+o-xylene mixtures: Measurement and modelling. / Kang, Kai; Zhu, Shanshan; Liang, Xiaodong; Kontogeorgis, Georgios M.; Wang, Xiaopo.

In: Fluid Phase Equilibria, Vol. 498, 2019, p. 1-8.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - High-pressure densities of n-decane+o-xylene mixtures: Measurement and modelling

AU - Kang, Kai

AU - Zhu, Shanshan

AU - Liang, Xiaodong

AU - Kontogeorgis, Georgios M.

AU - Wang, Xiaopo

PY - 2019

Y1 - 2019

N2 - In this work, the liquid densities of n-decane/o-xylene mixtures were measured at four different component proportions, the mole fractions of n-decane are 0.2001, 0.4065, 0.5835, and 0.8041, respectively. The measurements were performed based on the high-pressure vibrating-tube densimeter, and the measured temperatures were from 283.15 K to 363.15 K and the pressures were from 0.1 MPa to 60 MPa. The Tammann-Tait equation was used to correlate the experimental densities, and the simplified Perturbed Associating Fluid Theory (sPC-SAFT) and Cubic Plus Associating (CPA) equation were used to predict the high-pressure densities of the mixtures with the binary interaction parameters. Derived properties, including isothermal compressibilities and isobaric thermal expansivities, were calculated from Tait equation, sPC-SAFT equation, and CPA equation, respectively. In addition, excess molar volumes of the considered mixtures were obtained and the effects of pressure and temperature on the excess molar volume were discussed.

AB - In this work, the liquid densities of n-decane/o-xylene mixtures were measured at four different component proportions, the mole fractions of n-decane are 0.2001, 0.4065, 0.5835, and 0.8041, respectively. The measurements were performed based on the high-pressure vibrating-tube densimeter, and the measured temperatures were from 283.15 K to 363.15 K and the pressures were from 0.1 MPa to 60 MPa. The Tammann-Tait equation was used to correlate the experimental densities, and the simplified Perturbed Associating Fluid Theory (sPC-SAFT) and Cubic Plus Associating (CPA) equation were used to predict the high-pressure densities of the mixtures with the binary interaction parameters. Derived properties, including isothermal compressibilities and isobaric thermal expansivities, were calculated from Tait equation, sPC-SAFT equation, and CPA equation, respectively. In addition, excess molar volumes of the considered mixtures were obtained and the effects of pressure and temperature on the excess molar volume were discussed.

KW - EOS

KW - High-pressure density

KW - n-Decane

KW - o-Xylene

KW - Volumetric properties

U2 - 10.1016/j.fluid.2019.06.014

DO - 10.1016/j.fluid.2019.06.014

M3 - Journal article

VL - 498

SP - 1

EP - 8

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

SN - 0378-3812

ER -