RT info:eu-repo/semantics/article
T1 Thermodynamics of ketone + amine mixtures: Part II. Volumetric and speed of sound data at (293.15, 298.15 and 303.15) K for 2-propanone + dipropylamine, + dibutylamine or + triethylamine systems
A1 Alonso de Miguel, Iván
A1 Alonso Gómez, Víctor
A1 Mozo, Ismael
A1 García de la Fuente, Isaías Laudelino
A1 González López, Juan Antonio Mariano
A1 Cobos Hernández, José Carlos
AB Densities,  , and speeds of sound, u, of 2-propanone + dipropylamine,  + dibutylamine or + triethylamine systems have been measured at (293.15, 298.15 and 303.15) K and atmospheric pressure using a vibrating tube densimeter and sound analyser Anton Paar model DSA-5000. The   and u values were used to calculate excess molar volumes,  ,  and the excess functions at 298.15 K for the thermal expansion coefficient,  , and for the isentropic  compressibility,  at 298.15 K.   ,   and  are positive magnitudes. When replacing dipropylamine by dibutylamine or triethylamine in the studied mixtures, the excess functions increase. This may be ascribed to the interactions between unlike molecules are more important in the former solutions. From the comparison with similar data obtained for 2-propanone + aniline, + N-methylaniline, or + pyridine systems, it is concluded that interactions between unlike molecules are stronger in mixtures containing aromatic amines. Free volume effects are present in solutions with dipropyl or dibutylamine as the   curves are shifted towards higher mole fractions of 2-propanone.
YR 2010
FD 2010
LK https://uvadoc.uva.es/handle/10324/66117
UL https://uvadoc.uva.es/handle/10324/66117
LA eng
NO Journal of Molecular Liquids, 2010, 155 (2–3), 109-114
DS UVaDOC
RD 27-dic-2024