Density and Excess Volume for Four Systems Involving Eugenol and Furan

Abstract

Density and speed of sound measurements have been performed, at atmospheric pressure, using an Anton Paar digital vibrating tube densitometer for pure ethanol, 1-Octanol, nhexane, furan and eugenol, from 278.15 to 323.15 K and for binary mixtures of furan + ethanol, furan + 1-Octanol, eugenol + 1-Octanol and eugenol + n-hexane from 278.15 to 323.15 K. Excess molar volumes were calculated and compared. The Redlich Kister correlation was used to correlate the data. In order to identify the most relevant molecular interaction which contribute to the excess molar volume, the Prigogine Flory Patterson theory was applied to correlate and predict the excess molar volume of the mixtures.

Volumetric Properties of Furan and 2-5-Dimethylfuran in Different Industrial Solvents at Temperatures from 278 to 343 K

“…However, it is discussed elsewhere that this uncertainty is optimistic, and the real uncertainty can be as low as 0.001 g·cm –3 b Ref . c Ref . d Ref . e Ref . f Refe . g Ref . h Ref . i Ref . j Ref . k Ref . l Ref . m Reference . n Reference . o Reference . p Reference . q Reference . …”

“… a Standard uncertainty u ( P ) = 0.04 kPa and u ( T ) = 0.012 K. Expanded uncertainty (0.95 level of confidence, k = 2) U (ρ) = 6 × 10 –4 g·cm –3 (0.95 level of confidence). b Reference . …”

“…The interactional contribution is proportional to the Flory parameter ( X 12 ), also known as the cross parameter, and it defines the energy changes that happen during the formation of contacts between different molecules. Flory parameter can be determined using the Hildebrand solubility parameter δ i shown in eq where β is an empirical constant with a value of 0.34 and v is the molar volume of pure liquid.…”

“…The density values of pure compounds measured in this work are compared with the literature data and presented in Table 2; the general agreement between the data set measured from this work and those from the literature is good. The density and speed of sound data for pure furan were measured and compared with the literature (Coquelet et al 8 ). These density values were used to determine the pure component properties and parameters for the Redlich Kister and the PFP models.…”

“…The partial molar volume of each component is calculated using the Eq. (8) (8) where v i is the partial molar volume of component i, v i * is the molar volume of pure component i. the term was obtained by differentiating Eq 6, which leads to Eq 9 and Eq 10 for calculating the partial molar volume of components 1 as solute and 2 as solvent of binary mixture respectively.…”