TY - JOUR
T1 - Liquid viscosities of benzene, n-tetradecane, and benzene + n-tetradecane from 313 to 393 K and pressures up to 60 MPa
T2 - Experiment and modeling
AU - Hernández-Galván, Miguel A.
AU - García-Sánchez, Fernando
AU - Macías-Salinas, Ricardo
N1 - Funding Information:
This work was supported by the Molecular Engineering Program of the Mexican Petroleum Institute under projects D.00182 and I.00385. M.A. Hernández-Galván gratefully acknowledges the National Council for Science and Technology (CONACyT) of Mexico for their pecuniary support through a Ph.D. fellowship.
PY - 2007/12/15
Y1 - 2007/12/15
N2 - In this work, kinematic viscosities of benzene, n-tetradecane, and of the mixture benzene + n-tetradecane at four different compositions were measured using a rolling-ball viscometer from 313.2 to 393.2 K and pressures up to 60 MPa. Kinematic viscosities were converted to dynamic viscosities through the use of a density Tait-like equation for pure components and a single density mixing rule for the mixtures. A comparison between our measured viscosities and those reported by other authors for benzene and n-tetradecane was established with the correlation given by Assael et al. [M.J. Assael, J.H. Dymond, M. Papadaki, P.M. Patterson, Correlation and prediction of dense fluid transport coefficients. I. n-alkanes, Int. J. Thermophys. 13 (1992) 269-281]. The comparison showed an average absolute deviation of 1.5% for benzene and 2.7% for n-tetradecane. The measured mixture viscosity data were modeled with a proposed liquid viscosity model based on the Eyring's theory coupled with a cubic equation of state and using a single temperature-independent binary interaction parameter to describe the whole η - T - p - x surface of study. Results of the modeling effort yielded an average absolute deviation of 2.0%, which is within the experimental uncertainty.
AB - In this work, kinematic viscosities of benzene, n-tetradecane, and of the mixture benzene + n-tetradecane at four different compositions were measured using a rolling-ball viscometer from 313.2 to 393.2 K and pressures up to 60 MPa. Kinematic viscosities were converted to dynamic viscosities through the use of a density Tait-like equation for pure components and a single density mixing rule for the mixtures. A comparison between our measured viscosities and those reported by other authors for benzene and n-tetradecane was established with the correlation given by Assael et al. [M.J. Assael, J.H. Dymond, M. Papadaki, P.M. Patterson, Correlation and prediction of dense fluid transport coefficients. I. n-alkanes, Int. J. Thermophys. 13 (1992) 269-281]. The comparison showed an average absolute deviation of 1.5% for benzene and 2.7% for n-tetradecane. The measured mixture viscosity data were modeled with a proposed liquid viscosity model based on the Eyring's theory coupled with a cubic equation of state and using a single temperature-independent binary interaction parameter to describe the whole η - T - p - x surface of study. Results of the modeling effort yielded an average absolute deviation of 2.0%, which is within the experimental uncertainty.
KW - Dynamic viscosity
KW - Equation of state
KW - Experiment
KW - Kinematic viscosity
KW - Rolling-ball viscometer
KW - Viscosity modeling
UR - http://www.scopus.com/inward/record.url?scp=35748965579&partnerID=8YFLogxK
U2 - 10.1016/j.fluid.2007.08.010
DO - 10.1016/j.fluid.2007.08.010
M3 - Artículo
SN - 0378-3812
VL - 262
SP - 51
EP - 60
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - 1-2
ER -