A correlation gas chromatographic study of the vaporization enthalpies and vapor pressures of patchoulol and 2-tetradecanol and estimations of their sublimation properties

[Display omitted] •The vaporization enthalpy of patchoulol and 2-tetradecanol at 298 K are evaluated.•Vapor pressures at 298 K of patchoulol and 2-tetradecanol are evaluated.•Sublimation and fusion enthalpies and corresponding vapor pressures for both care estimated. The vaporization enthalpy and va...

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Veröffentlicht in:The Journal of chemical thermodynamics 2022-07, Vol.170, p.106778, Article 106778
Hauptverfasser: Simmons, Daniel, Chickos, James
Format: Artikel
Sprache:eng
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Zusammenfassung:[Display omitted] •The vaporization enthalpy of patchoulol and 2-tetradecanol at 298 K are evaluated.•Vapor pressures at 298 K of patchoulol and 2-tetradecanol are evaluated.•Sublimation and fusion enthalpies and corresponding vapor pressures for both care estimated. The vaporization enthalpy and vapor pressure near ambient temperatures of patchoulol, present in patchouli oil, are evaluated by correlation gas chromatography. Additionally, the vaporization enthalpy of 2-tetradecanol, used initially as a standard is also evaluated using a series of 1-alkanols. While the vaporization enthalpy evaluated differs from the literature value, the vapor pressures of 2-tetradecanol are found to be in good agreement with the literature over a broad range of temperatures. Fusion enthalpies of both of these low melting substances are estimated and used to calculate their sublimation enthalpies and vapor pressures at T = (Tfus and T = 298.15) K. The results are compared to available literature data, most of which was also estimated. Agreement with existing literature values is quite good.
ISSN:0021-9614
1096-3626
DOI:10.1016/j.jct.2022.106778