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