Viscosity and liquid density of asymmetric n-alkane mixtures: Measurement and modeling
authors Queimada, AJ; Marrucho, IM; Coutinho, JAP; Stenby, EH
nationality International
journal INTERNATIONAL JOURNAL OF THERMOPHYSICS
author keywords corresponding states; friction theory; liquid density; n-decane; n-docosane; n-eicosane; n-tetracosane; Peng-Robinson EOS; viscosity
keywords CORRESPONDING-STATES; SURFACE-TENSION; BINARY-MIXTURES; HYDROCARBONS; PREDICTION; PRESSURE; SYSTEMS; HEPTANE; FLUIDS; VAPORIZATION
abstract Viscosity and liquid density Measurements were performed, at atmospheric pressure. in pure and mixed n-decane. n-eicosane, n-docosane, and n-tetracosane from 293.15 K (or above the melting point) up to 343.15 K. The viscosity was determined with a rolling ball viscometer and liquid densities with a vibrating U-tube densimeter. Pure component results agreed, oil average, with literature values within 0.2% for liquid density and 3% for viscosity. The measured data were used to evaluate the performance of two models for their predictions: the friction theory coupled with the Peng-Robinson equation of state and a corresponding states model recently proposed for surface tension, viscosity, vapor pressure, and liquid densities of the series of n-alkanes. Advantages and shortcoming of these models are discussed.
publisher SPRINGER/PLENUM PUBLISHERS
issn 0195-928X
year published 2005
volume 26
issue 1
beginning page 47
ending page 61
digital object identifier (doi) 10.1007/s10765-005-2352-4
web of science category Thermodynamics; Chemistry, Physical; Mechanics; Physics, Applied
subject category Thermodynamics; Chemistry; Mechanics; Physics
unique article identifier WOS:000229040200004
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