Investigation of the mutual diffusion coefficients of [mmim]DMP/H 2 O and [mmim]DMP/CH 3 OH at atmospheric pressure

Experimental determination and predictive modelling of the mutual diffusion coefficients of water and ionic liquid 1-(2-hydroxyethyl)-3-methylimidazolium tetrafluoroborate

“…In the MGC model, there are 7 adjustable parameters, D*, α, β, a, b, c, and d, used to correlate the experimental data. Chen et al [22] found a very good agreement with the experimental data. They obtained an average absolute relative deviation of 2.05% and 1.78%, for the [mmim] DMP/H 2 O and [mmim]DMP/CH 3 OH systems, respectively.…”

“…In one of the very few available investigations applied to absorption systems, Chen et al [22] used a modified group contribution (MGG) model to determine the mutual diffusion coefficient in a H 2 O + ionic liquid binary system. They studied mixtures of ionic liquid (1-methyl-3-methylimidazolium dimethylphosphate ([mmim]DMP) with water and methanol.…”

“…The development of reliable theoretical approaches is limited by the complexity of solute-solvent interactions and enormous molecular structures of some media, such as ionic liquids. Moreover, most of the developed models consider the mutual diffusion coefficient as the product of a compositional average of limiting diffusion coefficients (kinetics contribution) and a thermodynamic factor (thermodynamic contribution) which represents the non-ideality of the mixture [21][22][23].…”

“…Therefore, one of the aims of this work is to complement the experimental results over the entire composition range by comparing with four predictive approaches: Vignes [21], UNIDIF [24], Modified Group Contribution [22], and Cluster diffusion [23]. To the best of our knowledge, it is the first time that some of these models have been used to predict the diffusion coefficient in binary mixtures with ionic liquids.…”