Abstract
The fluid phase behaviour of binary mixtures of xenon and the lighter perfluoro-n-alkanes, CF4 and C2F6, and of propane and sulfur hexafluoride (SF6) has been examined using the statistical associating fluid theory for potentials of variable attractive range (SAFT-VR). We found that the binary interaction parameters calculated in previous work for (n-alkane + perfluoro-n-alkane) systems and for (Xe + SF6), can be used to predict the existing phase diagrams of (Xe + perfluoro-n-alkane) and (propane + SF6) mixtures, respectively. These results are consistent with the view that mixtures of (xenon + perfluorinated-compound) can be regarded as a special case of mixtures of (n-alkane + perfluorinated-compound) and provide another example of the “alkane-like ” behaviour of xenon previously reported.
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