Excess Molar Enthalpies of an Alkanol + a Branched Chain Ether at the Temperature 298.15 K

Excess molar volumes and enthalpies of { an alkanol +tert -amyl methyl ether ( TAME )}

“…Continuing these investigations experimental results of H E and V E are reported here for (ethanol, or 1-propanol, or 2-propanol, or 1-butanol, or 2-butanol, or 1-octanol + TAME) at T = 298.15 K. The experimental as well as the already published H E data of Letcher and Govender (8) are used to test the applicability of the ERAS model for describing both excess properties using for each system one particular set of system-specific parameters.…”

“…Excess molar enthalpy H E (a) and excess molar volume V E (b) of (1-propanol + TAME) as a function of the mole fraction x of propanol •, •; and (2-propanol + TAME) , . Experiment: •, ; H E values of Letcher and Govender (8) and V E values of Letcher and Govender; (10) •, , this work; -, ERAS model using parameters listed in table 4. 3.…”

“…x is accurate to the third decimal place), respectively. •, H E values of Letcher and Govender (8) and V E values of Letcher and Govender; (10) •, this work; -, ERAS model using parameters listed in table 4.…”

Physical properties of binary mixtures of (t-butyl methyl ether + alcohols) fromT= 288.15K toT= 298.15K

“…This reverse trend seems to be attributed to the opposite effects of the molecular size and the intramolecular interaction (hydrogen bonding, or self-association) in the four alcohols, which directly interfere in the packing effect as well as in the interactive behaviour between ether and alcohol. The above findings lend support, using the data of heats of mixing of those mixtures available in the literature, (12) to the proposal above As the temperature is lowered, the packing effect in all four mixtures is also lowered, according to figure 1, probably due to the increase in the intramolecular interaction in the alcohol component. This trend of temperature effect is also observed in the results of isentropic compressibility, figures 3 and 4.…”

Extension of polar GC-SAFT to systems containing some oxygenated compounds: Application to ethers, aldehydes and ketones

“…Although ethers, aldehydes and ketones are not self-associating compounds, there is a cross-association interaction between H (of the group hydroxyl of alcohol) and O (of functional group CO, O or CHO of oxygenated compounds). This association was evidenced by measurements of excess enthalpy and/or volume (mixtures alcohol + ether [76,77], methanol and ketone, methanol and diethylether [78]), by neutron diffraction (Ceccarelli et al [79] Table 7 Results of predictions for binary cross-associating mixtures using the three versions of polar GC-SAFT.…”