Viscosities and refractive indices of binary mixtures of 1-butyl-3-methylimidazolium tetrafluoroborate and 1-butyl-2,3-dimethylimidazolium tetrafluoroborate with water at 298 K

Malham, Ibrahim Bou; Turmine, Mireille

doi:10.1016/j.jct.2007.10.002

Cited by 116 publications

(99 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“….8,14−16,18,21−29 For the pure [Bmmim][BF 4 ], which is a supercooled liquid at room temperature, in literature we did not find a systematic study on density, and for viscosity we have observed important disparities between reported values 8,16,18. Regarding the density data of pure [Bmmim][BF 4 ] they correspond well with those reported in literature,8,15 when using the same principle of measurement.…”

supporting

confidence: 77%

Properties of Pure 1-Butyl-2,3-dimethylimidazolium Tetrafluoroborate Ionic Liquid and Its Binary Mixtures with Dimethyl Sulfoxide and Acetonitrile

Ciocîrlan

Iulian

2012

J. Chem. Eng. Data

View full text Add to dashboard Cite

This work presents density and dynamic viscosity data for the pure ionic liquid, 1-butyl-2,3-dimethylimidazolium tetrafluoroborate, [Bmmim] [BF 4 ], and its binary mixtures with the highly polar solvents dimethylsulfoxide (DMSO) and acetonitrile (ACN), over the entire range of composition and temperatures from (298.15 to 353.15) K at atmospheric pressure. The properties have been represented with temperature by specific equations, both for pure [Bmmim] [BF 4 ] and its binary mixtures. Therefore, an empirical linear equation was used for density variation and for viscosity, the Vogel−Fucher−Tammann (VFT) equation. From the density data the excess molar volume, V E , apparent molar volume, V ϕi , and partial molar volume, V̅ mi , as well as thermal expansion coefficient, α p , have been evaluated. Moreover, the excess molar volume was fitted to the Redlich− Kister polynomial equation, and its variation with composition has been qualitatively discussed in terms of interaction and structural factors. ■ INTRODUCTIONIonic liquids (ILs) are a class of substances extensively studied by the scientific community because of their interesting properties such as a negligible vapor pressure, low melting point, suitable viscosity, high conductivity, wide electrochemical windows, and high stability, which makes them suitable for a diversity of applications, especially as solvents. 1−4 These solvents are called "green" because of their low vapor pressure and nonflammability.One of the most studied ILs are 1,3-alkyl-substituted imidazolium-based, whose properties can be modified by changing cation/anion combinations. Some of these properties can also be changed by replacing the hydrogen atom at position 2 of the imidazole ring with alkyl substituents. 5−7 The trialkylsubstituted imidazolium-based ILs are considered by some researcher groups to be promising material for electrochemical applications, 8−11 inorganic synthesis, 12 or enzymatic catalysis. 13 Our interest for the trialkyl-substituted imidazolium-based ILs is on the one hand to study the physicochemical properties of solvent systems with ILs that can be used as new media in the synthesis of different metal oxide nanostructures; in this sense we have already studied three 1-alkyl-3-methylimidazolium tetrafluoroborate ILs. 19,20 On the other hand the binary mixtures of such trialkyl-substituted imidazolium-based ILs with organic solvents are interesting from the fundamental research point of view for understanding the relation between structure and mixture properties, especially by comparing them with corresponding dialkyl-substituted mixtures.Therefore, in this paper we extended our studies on physicochemical properties of dialkyl-substituted 19,20 to trialkyl-substituted imidazolium ILs systems, with the same organic solvents, dimethylsulfoxide (DMSO) and acetonitrile (ACN). Also, it was interesting to comparatively discuss the volumetric behavior of these systems and to analyze the influence of cation nature or solvent type on the reported properties.The studies on th...

show abstract

supporting

confidence: 77%

Properties of Pure 1-Butyl-2,3-dimethylimidazolium Tetrafluoroborate Ionic Liquid and Its Binary Mixtures with Dimethyl Sulfoxide and Acetonitrile

Ciocîrlan

Iulian

2012

J. Chem. Eng. Data

View full text Add to dashboard Cite

show abstract

“…Changing of viscosities in ILs-water mixture systems are corresponding to the experimental reports. 20,23,59 Microstructures of systems. RDFs of cation-anion and terminal carbon atoms with themselves are presented in Figure 10, RDFs show that anions have a great effect on microstructure in ILs.…”

Section: Systems With Different Anionsmentioning

confidence: 99%

Effect of small amount of water on the dynamics properties and microstructures of ionic liquids

et al. 2016

View full text Add to dashboard Cite

A series of systems of 1‐butyl‐3‐methylimidazolium acetate ([Bmim][Ac]), 1‐butyl‐3‐methylimidazolium tetrafluoroborate ([Bmim][BF4]), and 1‐butyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide ([Bmim][Tf2N]) with a small amount of water were simulated. Viscosities of systems were obtained by nonequilibrium molecule dynamics simulation and the results show that the viscosities change in different ways: for [Bmim][BF4] and [Bmim][Tf2N], viscosities decrease rapidly in the first stage, and then decrease slowly with the increase of water content. But for [Bmim][Ac], the viscosities increase first and then decrease. The unique phenomenon of [Bmim][Ac] can be attributed to the formation of chain‐like structure of anion•••water•••anion•••. Hydrogen bond (HB) interaction between ion pairs is weakened, but the number of HB between water and anions increases with increase of water content. Besides, the microstructures of water in ionic liquids‐water systems were compared and found that the distribution of water is more concentrated in [Bmim][Tf2N]‐H2O system, while it is isotropy in [Bmim][Ac]‐H2O system. © 2016 American Institute of Chemical Engineers AIChE J, 63: 2248–2256, 2017

show abstract

“…The experimental viscosity, electrical conductivity, self‐diffusion coefficients, thermal conductivity, refractive index, isobaric expansivity, and isothermal compressibility data of the ILs, here used to estimate the group contribution parameters for the various correlations proposed, were taken from open literature concerning the physical properties of ILs,9–111 and from the International Union of Pure and Applied Chemistry (IUPAC) database 112. The following IL ions were considered in this study: cations imidazolium [Im], pyridinium [Py], pyrrolidinium [Pyr], piperidinium [Pip], alkyl phosphonium [Ph], and alkyl ammonium [Am]; anions, hexafluorophosphate [PF 6 ], tetrafluoroborate [BF 4 ], bis(trifluoromethanesulfonyl) amide [Tf 2 N], chloride [Cl], acetate [CH 3 COO], methyl sulfate [MeSO 4 ], ethyl sulfate [EtSO 4 ], trifluoromethanesulfonate [CF 3 SO 3 ], bis(perfluoroethylsulfonyl)imide [Pf 2 N], trifluoroacetate [CF 3 COO], dimethylphosphate [(CH 3 ) 2 PO 4 ], methoxyethylsulfate [CH 3 OC 2 H 4 SO 4 ], dicyanamide [N(CN) 2 ], tricyanomethanide [C(CN) 3 ], tetrachloroalluminate [AlCl 4 ], tetrachloroironate [FeCl 4 ], tetrachlorogallate [GaCl 4 ], tetrachloroindate [InCl 4 ], and trichlorozincate [ZnCl 3 ].…”

Section: Introductionmentioning

confidence: 99%

Group contribution methods for the prediction of thermophysical and transport properties of ionic liquids

2009

View full text Add to dashboard Cite

Thermophysical and transport properties of ionic liquids are required for the design of processes and products. Yet the experimental data available are scarce and often contradictory. Based on experimental data collected from the literature, group contribution methods were developed for the estimation of viscosity, electrical conductivity, thermal conductivity, refractive index, isobaric expansivity, and isothermal compressibility, of various families of ionic liquids. Using the Stokes-Einstein relation a correlation for the self-diffusion coefficients with the viscosity is also proposed. The results of the proposed models show average absolute relative deviations generally of the same order of the experimental accuracy of the data. They are easy to use and can provide predictions of property values for ionic liquids never previously studied. The group contribution basis of these models will allow them to be extended to new groups of cations and anions as further data became available. V

show abstract

Viscosities and refractive indices of binary mixtures of 1-butyl-3-methylimidazolium tetrafluoroborate and 1-butyl-2,3-dimethylimidazolium tetrafluoroborate with water at 298 K

Cited by 116 publications

References 39 publications

Properties of Pure 1-Butyl-2,3-dimethylimidazolium Tetrafluoroborate Ionic Liquid and Its Binary Mixtures with Dimethyl Sulfoxide and Acetonitrile

Properties of Pure 1-Butyl-2,3-dimethylimidazolium Tetrafluoroborate Ionic Liquid and Its Binary Mixtures with Dimethyl Sulfoxide and Acetonitrile

Effect of small amount of water on the dynamics properties and microstructures of ionic liquids

Group contribution methods for the prediction of thermophysical and transport properties of ionic liquids

Contact Info

Product

Resources

About