Excess enthalpies of (a xylene + an alkanol) at 298.2 K

Isobaric molar heat capacities of the mixture (p-cymene + ethanol) at several temperatures and atmospheric pressure

“…It can be seen that the molar heat capacities here determined are slightly higher than those of Huffman et al [43] but it can be concluded that there is a fair agreement between both set of data. been also observed for the mixtures of benzene [14,20] and toluene [11,14] with ethanol and are also expected for the mixture of p-xylene with ethanol whose excess enthalpies increase as temperature increase [8,[9][10]. Supposing that the excess molar enthalpies are positive for the mixture of p-cymene, as stated before, this means that they would increase as the temperature rises and, consequently, that the breaking of interactions would become more and more pronounced for increased temperatures within the range studied.…”

“…The thermodynamic behavior of many binary mixtures (alkanol + alkylbenzene) has been often determined and interpreted. In particular, for the mixtures of ethanol + benzene, or + toluene, or + ethyl-benzene, or + cumene, or + xylene, properties such as H E [1][2][3][4][5][6][7][8][9][10][11][12], V E [7,10,13,[17][18], G E [19] and C p [11,14,20] have been measured. An interesting system related with them is the mixture of 1-methyl-4-(1-methyl-ethyl)benzene, usually known as p-cymene, with ethanol, a mixture for which no thermodynamic data have been found in the literature.…”

Excess Enthalpies of Ketone + Alkanol at the Temperature 298.15 K

“…The ketones were purified as directed by Perrin and Armarego (1988). The alcohols were dried and distilled as previously described by Letcher et al (1990) and stored in a dry glovebox prior to use. The alcohols were analyzed for possible water contamination by the Karl-Fisher technique and were found to have a water impurity of less than 0.02 mol %.…”

Thermophysical and volumetric study of mixtures {p-cymene + propan-1-ol} at several temperatures and atmospheric pressure. Modeling with COSMO-RS

“…In sight of this agreement, it is fair to suppose that the excess molar enthalpy for the mixture of p-cymene with propan-1-ol would be positive because it is also positive for the mixtures of propan-1-ol with benzene [5,8,10,12,13], or toluene [8,10,12,13], or the three isomers of xylene [7,8,10,11,13,14] as was also supposed on a very similar basis for the mixture of p-cymene with ethanol [2]. Then, for all of the mixtures of benzene or alkylbenzene with ethanol or propan-1-ol the prevailing thermal effect in the mixing process is the breaking of interactions in the pure compounds (especially of hydrogen bonds in the alkanol), a breaking which is not compensated by the π-OH interactions between aromatic compounds and alkanol.…”