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Infinite dilution diffusion coefficients in liquids
Author(s) -
Vadovic C. J.,
Colver C. P.
Publication year - 1973
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690190320
Subject(s) - dilution , thermodynamics , diffusion , chemistry , alkane , binary number , aqueous solution , binary system , function (biology) , extension (predicate logic) , mathematics , organic chemistry , physics , hydrocarbon , arithmetic , evolutionary biology , biology , computer science , programming language
The extension of the Enskog theory by Tham and Gubbins for the calculation of diffusivities is applied to the prediction of infinite dilution diffusion coefficients in binary organic systems. The resulting expression is a function only of the size and mass of the diffusing species. Excellent agreement is obtained for nonassociating n‐alkane mixtures as well as for associated systems. Extension of the expression to alcohol and aqueous systems is shown to require Only an empirical correction factor. It is also shown that the quantity D ij ∞ η j M j /ρ j T is independent of temperature for all systems.