RT info:eu-repo/semantics/article
T1 Measurements and predictions of densities and viscosities in CO2 + hydrocarbon mixtures at high pressures and temperatures: CO2 + n-pentane and CO2 + n-hexane blends
A1 Moreau Ortega, Alejandro
A1 Polishuk, Ilya
A1 Segovia Puras, José Juan
A1 Tuma, Dirk
A1 Vega Maza, David
A1 Martín González, María del Carmen
K1 Carbon dioxide
K1 Dióxido de carbono
K1 Alkanes
K1 Alcanos
AB This work reports new experimental data on densities and viscosities of (CO2 + n-pentane) and (CO2 + n-hexane) mixtures at high pressures and temperatures. The densities were measured by vibrating-tube densimeter with an expanded uncertainty (k = 2) smaller than 1.8 kg·m–3 at six isotherms (from 273.15 K to 373.15 K), twelve pressures starting at 5 MPa up to 100 MPa, and at six CO2 molar compositions (from 0 to 0.6). The viscosities were measured by vibrating-wire viscometer with the corresponding relative expanded uncertainty (k = 2) smaller than 0.016 at five isotherms (from 273.15 K to 373.15 K), twelve pressures (from 5 MPa up to 100 MPa), and at two CO2 molar compositions (0.1 and 0.3). The densities were fitted by the semiempirical Tammann-Tait equation for densities data and the Vogel-Fulcher-Tammann (VFT) equation for viscosity data, respectively. The Groupe Européen de Recherches Gazières (GERG-2008) equation of state was also applied for modelling the densities. Over-all robustness and reliability of the Perturbed-Chain Statistical Association Fluid Theory (PC-SAFT) and its critical point-based modification (CP-PC-SAFT) were examined. Accuracies the Modified Yarranton-Satyro (MYS) coupled with CP-PC-SAFT and the NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP 10) in predicting the viscosities were evaluated.
PB Elsevier
SN 0167-7322
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/53639
UL https://uvadoc.uva.es/handle/10324/53639
LA eng
NO Journal of Molecular Liquids, 2022, In Press, 119518
NO Producción Científica
DS UVaDOC
RD 23-nov-2024