Phase equilibria and critical phenomena in fluid ( n-hexane + water) at high pressures and temperatures

Phase equilibria in fluid ( n-hexane + water) were measured in the temperature range 610 to 675 K and at pressures from 15 to 140 MPa. The critical curve of the mixture starts at the critical point of pure water ( T c = 646.1 K; p c = 22.1 MPa) and runs via a temperature minimum at T = (627.8 ± 0.2)...

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Bibliographic Details
Published in:The Journal of chemical thermodynamics 1982, Vol.14 (1), p.83-91
Main Authors: De Loos, Th.W, Penders, W.G, Lichtenthaler, R.N
Format: Article
Language:English
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Summary:Phase equilibria in fluid ( n-hexane + water) were measured in the temperature range 610 to 675 K and at pressures from 15 to 140 MPa. The critical curve of the mixture starts at the critical point of pure water ( T c = 646.1 K; p c = 22.1 MPa) and runs via a temperature minimum at T = (627.8 ± 0.2) K and p = (31 ± 2) MPa to higher pressures, suggesting that (gas + gas) equilibria of the second kind occur. The results are discussed in view of phase equilibria of other ( n-alkane + water) mixtures. It is shown that the form of the critical line of (an n-alkane + water) changes systematically with the carbon number of the n-alkane.
ISSN:0021-9614
1096-3626
DOI:10.1016/0021-9614(82)90126-4