Authors: U Hohm L Zarkova M Damyanova
Publish Date: 2006/09/08
Volume: 27, Issue: 6, Pages: 1725-1745
Abstract
Selfconsistent calculations of interaction pVTvirial coefficients B 12T viscosities η mix T and diffusion coefficients D 12T of binary mixtures of the alkanes C n H2n + 2 n 6 are presented This study is based on the recently developed model of the n6 LennardJones temperaturedependent potential LJTDP and uses already obtained potential parameters of the pure alkanes as input data The wellknown and simple LorentzBerthelot LB and the more laborate TangToennies TT mixing rules are applied to the potential parameters of the pure alkanes in order to determine those of the mixtures The new Hohm–Zarkova–Damyanova HZD mixing rule which is an extension of the TTmixing rule is also considered The HZD takes into account that for the LJTDP model in general the repulsive parameter is an independent variable whose value n ≠ 12 As in a recent examination of binary mixtures of globular molecules the LBmixing rule is superior to TT and HZDmixing rules when calculating equilibrium properties such as B 12T For the transport properties η mix T and D 12T the new mixing rule performs slightly better
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