Calculation of Abraham model L-descriptor and standard molar enthalpies of vaporization and sublimation for C9 - C26 mono-alkyl alkanes and polymethyl alkanes

Autor:	Priya Tirumala, Carina Jiang, Jennifer Huang, William E. Acree, Angelina Xu, Shrika Eddula, Michael H. Abraham, Grace Liu
Rok vydání:	2020
Předmět:	Molar chemistry.chemical_classification Capillary column Chemistry Elution Vaporization Analytical chemistry Kovats retention index Sublimation (phase transition) General Chemistry equipment and supplies Methyl silicone Alkyl
Zdroj:	European Chemical Bulletin. 9:317
ISSN:	2063-5346
DOI:	10.17628/ecb.2020.9.317-328
Popis:	Abraham model L solute descriptors have been determined for 127 additional mono-alkyl alkanes and polymethyl alkanes based on published gas chromatographic retention indices for solutes eluted from a fused-silica capillary column coated with a cross-lined methyl silicone stationary phase. Standard molar enthalpies of vaporization and sublimation at 298 K are calculated for the 127 mono-alkyl alkanes and polymethyl alkanes using the reported solute descriptors and our recently published Abraham model correlations. Calculated vaporization and sublimation enthalpies derived from the Abraham model compare very favourably with values based on a popular atom-group additivity model.
Databáze:	OpenAIRE
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