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Medientyp:
E-Artikel
Titel:
Predictive equations for self‐diffusion in liquids: A different approach
Beteiligte:
Dullien, F. A. L.
Erschienen:
Wiley, 1972
Erschienen in:AIChE Journal
Sprache:
Englisch
DOI:
10.1002/aic.690180113
ISSN:
0001-1541;
1547-5905
Entstehung:
Anmerkungen:
Beschreibung:
<jats:title>Abstract</jats:title><jats:p>Simple relationships have been obtained which can be used to predict self‐diffusion coefficients of liquids with an average error of ±4%. In addition to the customary parameters, one of these equations contains the critical volume <jats:disp-formula>
</jats:disp-formula> whereas the other uses Lennard‐Jones potential parameters <jats:disp-formula>
</jats:disp-formula> Both relations were derived by using a general relation between transport coefficients of pure fluids and a molecular‐kinetic‐model of liquids. No use has been made either of the Stokes‐Einstein relation or the absolute rate theory.</jats:p><jats:p>By applying the same relation between transport coefficients of pure fluids to gases, an equation has been obtained which can be used to calculate consistently molecular diameters in gases as a function of temperature, using Lennard‐Jones potential parameters.</jats:p>