Molar heat capacities of the mixture {1, 8-cineole + ethanol} at several temperatures and atmospheric pressure. (January 2016)

• Record Type: Journal Article
• Authors: Martínez-López, José F.; Schneider, Severin; Salavera, Daniel; Mainar, Ana M.; Urieta, José S.; Pardo, Juan I.
• Is Part Of: Journal of chemical thermodynamics. Volume 92(2016:Jan.)
• Page Start: 146
• Page End: 151
• Publication Date: 2016-01
• Subjects: (1, 8-Cineole + ethanol) mixture -- Molar heat capacity -- Atmospheric pressure -- COSMO-RS; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2015.09.012
• Languages: English
• ISSNs: 0021-9614

Abstract

Graphical abstract: Highlights: CP, m at atmospheric pressure have been measured for the mixture {1, 8-cineole + ethanol} between T = (304.7 and 324.5) K. CP, m values for 1, 8-cineole are comparable to those of monoterpenes of similar molar mass and structure. C P, m E have been calculated from CP, m, being their values positive and increasing as the temperature rises. C P, m E have been predicted using the COSMO-RS model. The results are acceptable. Abstract: Molar heat capacities at atmospheric pressure have been determined every 5 K for the mixture {1, 8-cineole (1) + ethanol (2)} in the temperature interval (304.7 to 324.5) K and the whole composition range with a Calvet type calorimeter Setaram C80. From the molar heat capacities, excess molar heat capacities have been calculated, their values being positive and increasing as the temperature rises. The solvation model COSMO-RS has been applied to predict the excess molar heat capacities. The model overestimates the values of the excess heat capacities but predicts well the trend of variation of the excess molar heat capacity with the temperature.