Part 2: Limiting apparent molar volume of organic and inorganic 1:1 electrolytes in (water+ethylammonium nitrate) mixtures at 298K – Thermodynamic approach using Bahe–Varela pseudo-lattice theory

Theoretical model for moisture adsorption on ionic liquids: A modified Brunauer–Emmet–Teller isotherm approach

“…The existence of a "loose" lattice structure (hereinafter referred to as a pseudolattice) in electrolyte solutions for concentrations beyond 0.01 M is a well-known fact [11][12][13][14][15][16][17][18]. This structural scheme is gradually reinforced up to the highest possible concentrations of the ionic solutions or, in the case of mixtures of ILs, up to the limit of pure IL.…”

“…From the experimental point of view, Katayanagi et al [11] have recently verified the existence of long-range correlations in liquid 1-n-butyl-3-methylimidazolium iodide ([bmim]I) and that the structure of cations and anions are similar to those in the crystal by means of wide angle X-ray scattering and Raman spectroscopy. Moreover, the assumption of this structural model-the basic hypothesis of the so called Bahe-Varela formalism [12][13][14][15][16][17] allows the interpretation of both equilibrium [18] and transport properties [19] of ILs. According to this structural scheme, we can assume that the free surface of the IL is formed by 2D-cells which provide potential wells that act like adsorption nodes.…”

Mixing behaviour of charged and non-charged surfactants described by BET isotherms

“…Indeed, these two models (RST and BET) are not the only ones to be able to account for the behaviour of mixtures of charged and uncharged surfactants. We encourage consideration of other approaches, such as the Bahe-Varela approach [50][51][52] which we recently showed to be useful for describing the properties of water-ionic liquid mixtures. Obviously, all the models based on molecular modelling of the interactions between the amphiphiles of the micelle can also be fruitful.…”

Experimental evidence of the validity of Bahe–Varela theory to describe the volumetric properties of ionic liquids

“…It has been demonstrated from molecular dynamic simulations [33] and observed through X-ray diffraction [34,35], that a polar network exists in these systems so, from the theoretical perspective, one expects that a pseudo-lattice model is particularly well adapted to the peculiarities of ILs. Indeed, Turmine and co-workers [2,36] proved that the so called B-V pseudo-lattice theory of electrolyte solutions is capable of accounting for the thermodynamic properties of binary mixtures of ILs up to the limit of pure compound.…”