In. Tarassov et al., P,T-DEPENDENCE OF SELF-DIFFUSION IN THE FLUID ONE-PHASE REGION OF THESYSTEM TETRADECANE METHANE/, Polish Journal of Chemistry, 71(12), 1997, pp. 1763-1776
High pressure self-diffusion coefficients and densities are reported f
or the binary system tetradecane/methane in a wide range of temperatur
e at Pressures up to 200 MPa. The experimental diffusion data of these
mixtures are analyzed in the frame work of the rough hard sphere (RHS
) model under application of hard sphere (HS) molecular dynamics simul
ations for binary mixtures of hard spheres obtained recently in our gr
oup. The rotation-translation coupling parameter A shows a weak temper
ature dependence, falling slightly when the temperature is lowered. Th
e RHS-diamerer for the lighter compound is identical to the value foun
d for neat methane. The value for the RHS-diameter of tetradecane in t
he mixture is found slightly larger than in the neat retradecane. Both
diameters show a slight increase with falling temperature.