Based on the variational and perturbation theories of liquid state, at equilibrium conditions, an approximation technique is introduced through which it has been made possible the derivation of analytic relations for the thermodynamic properties of simple liquids in which the intermolecular potential can be represented by the Lennard-Jones (m-n) potential function. By the application of the har...

We present a semiempirical approach to the density functional theory of bubble nucleation in binary mixtures. Intermolecular forces between solvent and solute molecules are modeled using Lennard-Jones potentials whose interaction parameters are determined by equilibrium properties of the pure liquids and the liquid mixtures. We study the temperature variation of the critical supersaturation for...

We demonstrate that thermocapillary forces may drive bubbles against liquid flow in 'anomalous' mixtures. Unlike 'ordinary' liquids, in which bubbles migrate towards higher temperatures, we have observed vapour bubbles migrating towards lower temperatures, therefore against the flow. This unusual behaviour may be explained by the temperature dependence of surface tension of these binary mixture...

An apparatus has been developed for simultaneous measurements of fluid densities and dielectric constants at temperatures from 70 to 320 K and at pressures to 35 MPa. A magnetic suspension technique, based on an application of Archimedes' principle, is employed in the density determination, while a concentric cylinder capacitor is used for obtaining the dielectric constant data. The apparatus c...

In this paper, the vapor-liquid equilibrium (VLE) properties of polar and nonpolar fluids are modeled by the use of a statistically-based equation of state (EOS). The equation of state used in this work is that of Ihm-Song-Mason (ISM) EOS. An alternative approach is to revise the isothermal integration on liquid. In this respect, a temperature-dependent revision factor b (T) is introduced to th...

It has been shown in the present paper that exploitation of experimental potential a photoacoustic technique can provide information on type intermolecular interactions aqueous mixtures containing organic liquids, when basic parameters these mixtures, such as density, ρ, specific heat, cp, or thermal conductivity, λ, are unknown. Earlier investigations concentration dependence effusivity differ...

Interfacial effects in (room temperature) ionic liquids at charged surfaces are very important for ionic liquids applications in electrochemistry,1 energy storage,2 catalysis3 and other areas (e.g., lubrication4,5). However despite the many articles published on this subject (several hundred papers just in 2013) there is still no general agreement in the literature about the main factors that g...

Mixtures of quantum fluids, that is gases or liquids, are considered with the emphasis on conditions characterizing stability mixtures. The mixtures, can be formed by cold atoms molecules, assumed to requiring description using techniques, but not so exhibit superfluidity superconductivity. Reviewing such normal systems important for comparison these of, e.g., Bose-condensed behavior observable...

Density and dynamic viscosity data of binary mixtures of ionic liquids (ILs) were determined in this work, at temperatures from 283.15 to 363.15 K and at 0.1 MPa. The mixtures of two ILs comprise a common cation and different anions, combining 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide with eight other ionic liquids, namely, 1-butyl-3-methylimidazolium thiocyanate, 1-butyl-3m...