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Decrease of diffusion coefficients near binodal states of liquid‐liquid systems
Author(s) -
Hampe Manfred Josef,
Schermuly Wolfgang,
Blaß Eckhart
Publication year - 1991
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270140402
Subject(s) - binodal , thermodynamics , scaling , saturation (graph theory) , diffusion , work (physics) , mass transfer , chemistry , solubility , statistical physics , physics , mathematics , phase (matter) , phase diagram , geometry , organic chemistry , combinatorics
This work investigates the thermodynamically based assumption that diffusion at binodal states of unstable fluid systems vanishes. It is shown experimentally that a scaling law, which describes the fall in diffusion near critical points, may also be applied in an extended form to its abatement at the limits of solubility. These results may profoundly affect the modelling of mass transfer between phases whose bulks exhibit states of saturation.