Semi - theoretical versus entirely empirical / Ilya Polishuk in Industrial & engineering chemistry research, Vol. 50 N° 19 (Octobre 2011)  

Semi - theoretical versus entirely empirical : comparing SAFT + cubic and soave - benedict - webb - rubin (SBWR) equations of state [texte imprimé] / Ilya Polishuk, Auteur . - 2011 . - pp. 11422-11431.
Chimie industrielle
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11422-11431

Mots-clés :	Thermodynamic properties Equations of state
Résumé :	In the current study, the Soave―Benedict―Webb―Rubin (SBWR) and Statistical Association Fluid Theory (SAFT) + Cubic equation-of-state (EOS) models are implemented for predicting thermodynamic properties of the mixtures of 1-decanol with n-alkanes, cyclohexane, chloroform, and chlorobenzene. The pertinent pure compound density and sound velocity data in a broad pressure range also are considered. It is demonstrated that the SBWRmodel is advantageous in modeling the pure-compound vapor pressures and phase envelop densities. However, it fails to estimate other thermodynamic properties, such as the high-pressure densities, sound velocities, and isentropic compressibilites accurately. Being less precise in modeling the pure-compound vapor-liquid equilibrium (VLE), the SAFT + Cubic model exhibits an overall robustness in predicting various thermodynamic properties over a wide range oftemperatures and pressures, with the exception of certain phenomena related to heat capacities. This robustness also is preserved in the case of the mixtures.
DEWEY :	660
ISSN :	0888-5885
En ligne :	http://cat.inist.fr/?aModele=afficheN&cpsidt=24573338