Binary mixtures of two identical Lennard-Jones fluids with non-Lorentz-Berthelot combining rules have been simulated at ambient-like conditions in order to examine the effect of cross interactions on mixing properties - excess volumes and enthalpies. Various combinations of deviations of both energy and size cross parameters from the Lorentz-Berthelot rules have been considered. Whereas consequences of the deviations for excess volume are rather straightforward, a variety of behavior types is found for excess enthalpy, including an excess function with three extrema.

Keywords: Binary mixtures; Lennard-Jones fluids; Non-Lorentz-Berthelot rules.

Intermolecular potential functions of various ...

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