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Journal of Chemical Physics / Volume 90 / Issue 11

J. Chem. Phys. 90, 6632 (1989); http://dx.doi.org/10.1063/1.456280 (10 pages)

Systematic investigation of the phase behavior in binary fluid mixtures. I. Calculations based on the Redlich–Kwong equation of state

Ulrich K. Deiters1 and Ian L. Pegg2

1Lehrstuhl f ür Physikalische Chemie II, Ruhr‐Universität Bochum, D‐4630 Bochum 1, Federal Republic of Germany
2Physics Department, The Catholic University of America, Washington, D. C. 20064

(Received 29 September 1988; accepted 16 February 1989)

The original Redlich–Kwong equation, together with the usual quadratic mixing rules, has been used to calculate phase diagrams for binary fluid mixtures and to classify them according to the system of van Konynenburg and Scott. Global phase diagrams (maps) showing the extent of the various phase diagram classes in the space of the Redlich–Kwong parameters are presented. While for molecules of equal size the results are very similar to those known for the van der Waals equation, the maps become topologically different for molecules of unequal sizes; some complicated phase diagram classes, which otherwise cover small domains on the maps or cannot be found at all, become quite important.

KEYWORDS and PACS

Keywords

EQUATIONS OF STATE, SOLUTIONS, BINARY MIXTURES, PHASE EQUILIBRIA, PHASE DIAGRAMS, FLUIDS

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.456280

PUBLICATION DATA

ISSN

0021-9606 (print)  
1089-7690 (online)

For access to fully linked references, you need to log in.
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