Isobaric thermal expansivities of mixtures ofm-cresol and quinoline from 0.1 to 400 MPa at 303 to 503 K |
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Authors: | S. L. Randzio L. D. Hansen E. A. Lewis D. J. Eatough |
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Affiliation: | (1) Institute of Physical Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, PI-01-224 Warszawa, Poland;(2) Department of Chemistry and Biochemistry, Brigham Young University, 84602 Provo, Utah, USA |
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Abstract: | Isobaric thermal expansivities, α p (p, T), of five binary mixtures ofm-cresol with quinoline (0.1499, 0.2998, 0.5005, 0.6325, and 0.8501 mol fraction ofm-cresol) were measured in a pressure-controlled scanning calorimeter over the pressure range from just above the saturation vapor pressures to 400 MPa, and at 303.15, 353.15, 403.15, 453.15, and 503.15 K. Molecular association ofm-cresol with itself and ofm-cresol with quinoline exerts large effects on the pressure and temperature behavior of α p isotherms. The extent of association changes significantly with conditions in all except the 2∶1 mixture as demonstrated by the crossing of isotherms at lower pressures as the temperature increases. In the 2∶1m-cresol quinoline mixture the extent of association is not perturbed significantly by temperature change and the mixture behaves like a simple liquid, exhibiting a unique crossing point of α p isotherms. |
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Keywords: | binary mixtures m-cresol pressure-controlled scanning calorimetry quinoline thermal expansivity |
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