Journal
AICHE JOURNAL
Volume 47, Issue 7, Pages 1676-1682Publisher
WILEY
DOI: 10.1002/aic.690470719
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New force fields for carbon dioxide and nitrogen are introduced that quantitatively reproduce the vapor - liquid equilibria (VLE) of the neat systems and their mixtures with alkanes. In addition to the usual VLE calculations for pure CO2 and N-2, calculations of the binary mixtures with propane were used in the force-field development to achieve a good balance between dispersive and electrostatic (qundrupole- quadrupole) interactions. The transfer ability of the force fields was then assessed from calculations of the VLE for the binary mixtures with n-hexane, the binary mixture of CO2/N-2, and the ternary mixture of CO2/N-2/propane. The VLE calculations were carried out using configurational-bias Monte Carlo simulations in either the grand canonical ensemble with histogram-reweighting or in the Gibbs ensemble.
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