Vapor-liquid equilibrium of carbon dioxide-perfluoroalkane mixtures: Experimental data and SAFT modeling
authors Dias, AMA; Carrier, H; Daridon, JL; Pamies, JC; Vega, LF; Coutinho, JAP; Marrucho, IM
nationality International
journal INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
keywords ASSOCIATING FLUID THEORY; THERMODYNAMIC PERTURBATION-THEORY; N-PERFLUOROALKANES; SUPERCRITICAL CO2; PHASE-EQUILIBRIUM; CHAIN MOLECULES; CUBIC EQUATIONS; BINARY-SYSTEMS; STATE; BEHAVIOR
abstract Pressure-composition diagrams were measured at different temperatures ranging from 293.15 to 353.15 K for different perfluoroalkaties including, linear (perfl u oro-n -octane), cyclic (perfluorodecalin and perfluoromethylcyclohexane), and aromatic compounds (perfluorobenzene and perfluorotoluene), at pressures up to 100 bar. Measurements were performed using a high-pressure cell with a sapphire window that allows direct observation of the phase transition. The different molecular structures were chosen in order to check the influence of the nature of the solvent on the carbon dioxide solubility. The soft-statistical associating fluid theory (soft-SAFT) equation of state (EoS) was used to describe the phase behavior of the mixtures studied, searching for transferable parameters with predictive capability. Optimized values for the chain length, Lennard-Jones (U) diameter, and dispersive energy are provided for the different perfluoroalkanes and for carbon dioxide. The effect of the explicit inclusion of a quadrupole moment on carbon dioxide, perfluorobenzene, and perfluorotoluene was studied by adding a polar term to the original soft-SAFT EoS.
publisher AMER CHEMICAL SOC
issn 0888-5885
year published 2006
volume 45
issue 7
beginning page 2341
ending page 2350
digital object identifier (doi) 10.1021/ie051017z
web of science category Engineering, Chemical
subject category Engineering
unique article identifier WOS:000236715600022
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 3.573
5 year journal impact factor 3.684
category normalized journal impact factor percentile 69.58
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg