Isothermal Vapor−Liquid Equilibrium of (1-Butanol + 1,8-Cineole) at 10 Temperatures between (278.15 and 323.15) K

Abstract

Vapor pressures of (1-butanol þ 1,8-cineol) at 10 temperatures between (278.15 and 323.15) K were measured by a static method. The reduction of the vapor pressures for obtaining activity coefficients and excess molar Gibbs energies was carried out by fitting the vapor pressure data to the Wilson equation according with Barker's method. Four equations of state (EOS) were used to correlate the vapor-liquid equilibrium (VLE) and for describing the volumetric behavior of the mixture. Two of them are modifications of the temperature-dependent function R(T r ) in the attractive term of Peng-Robinson equation as proposed by Mathias (PRM) and by Stryjek-Vera (PRSV). In both cases a volume translation (VT) according to Peneloux was considered. The other two models applied are based on the theory of perturbations: statistical associating fluid theory (SAFT) and perturbed-chain statistical associating fluid theory (PC-SAFT). The best description of the phase equilibrium was achieved by the Stryjek-Vera modification, whereas SAFT and PC-SAFT provided the best volumetric results.

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

“…Among these, the mixture of 1,8-cineole (1,3,3-Trimethyl-2-oxabicyclo[2.2.2]octane) with alkanols has been the subject of an ample investigation in our research group, including properties such as excess molar enthalpy [2], density at low and high pressure [2][3][4] and (vapor +liquid) equilibrium [5,6]. 1,8-Cineole or eucalyptol, a monoterpenoid, is the main component of the volatile oils obtained from several plants and has many applications in the fields of flavour and fragrances, pharmacy.…”

Vapor Pressures and Activity Coefficients of (1-Propanol + 1,8-Cineole) at 10 Temperatures between 278.15 K and 323.15 K

“… a u ( T ) = 0.01 K, u ( P ) = 0.1 % of the measured P value. b Used in the Barker analysis. c Reference . d Reference . e Reference . f Reference . …”

“…The SAFT parameters for 1-propanol were taken from literature . The cubic EOS and SAFT parameters corresponding to 1,8-cineole were calculated in a previous paper …”

“…In the last years some papers have been published dedicated to both pure 1,8-cineole as to mixtures of (1-alkanol from ethanol to 1-pentanol + 1,8-cineole). − Isobaric VLE measurements for the (1-propanol + 1,8-cineole) binary system was carried out previously by our group . Data on vapor pressures at these temperatures of this binary system have not been found in the open literature.…”

Prediction of mutual diffusion coefficients in binary liquid systems with one self-associating component from viscosity data and intra-diffusion coefficients at infinite dilution

“…The VLE (Vapour Liquid Equilibrium) data of the studied systems at various temperatures are given in Table 1. The vapour pressures of the pure components, ethanol, 1-propanol, 1-butanol, 1-pentanol and carbon disulphide, were not given by McKeigue (1986), so that they were obtained elsewhere from Zaoui-Djelloul-Daouadji et al 2014, Villa et al (2005), Gimeno et al (2011), Ronc and Ratcliff (1976) and Aracil et al (1989) respectively VLE data of cyclohexane-acetone at 25 0 C from Tasić et al (1978) is consistent to the data from Puri et al (1974). Hu et al (2003) The thermodynamic correction factors were obtained by extracting activity coefficient profiles from the vapour-liquid equilibrium (VLE) data for the mixtures, using a numerical integration method.…”