Influence of alkyl chain on the thermodynamic properties of aqueous solutions of ionic liquids 1-alkyl-3-methylimidazolium bromide at different temperatures Export

@article{citeulike:3732135, abstract = {Osmotic coefficients [phi], mean activity coefficients [gamma]±, vapor pressure p data, and excess Gibbs free energies GE of aqueous solutions of three ionic liquids 1-propyl-3-methylimidazolium bromide [PMIm]Br, 1-pentyl-3-methylimidazolium bromide [PnMIm]Br, and 1-hexyl-3-methylimidazolium bromide [HMIm]Br were determined by the vapor pressure osmometry method at four temperatures (298.15 K to 328.15 K) in intervals 10 K. From the comparison of osmotic coefficients it follows that aqueous solution of [PMIm]Br shows a more pronounced deviation from Debye-H\"{u}ckel limiting law (DHLL) and vapor pressure depression more than the other studied ionic liquids which was interpreted in terms of hydrophobic interactions. The Pitzer-ion interaction and MNRTL electrolyte models satisfactorily correlate experimental osmotic coefficient data with good precision. The parameters of the Pitzer-ion interaction model are used to calculate the mean molal activity coefficients and excess Gibbs free energies.}, author = {Shekaari, Hemayat and Mousavi, Sedighehnaz S.}, citeulike-article-id = {3732135}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.jct.2008.07.011}, citeulike-linkout-1 = {http://www.sciencedirect.com/science/article/B6WHM-4T2M623-1/2/69be98133aaa1d109a2a6e2c86bae2da}, doi = {10.1016/j.jct.2008.07.011}, issn = {0021-9614}, journal = {The Journal of Chemical Thermodynamics}, keywords = {1-alkyl-3-methylimidazolium, activity, bromide, coefficient, coefficients, ionic, liquid, liquids, mnrtl, model, osmometry, osmotic, pitzer, pressure, rtil, vapor}, month = {January}, number = {1}, pages = {90--96}, posted-at = {2008-12-01 10:15:59}, priority = {2}, title = {Influence of alkyl chain on the thermodynamic properties of aqueous solutions of ionic liquids 1-alkyl-3-methylimidazolium bromide at different temperatures}, url = {http://dx.doi.org/10.1016/j.jct.2008.07.011}, volume = {41}, year = {2009} }

TY - JOUR ID - citeulike:3732135 L3 - citeulike-article-id:3732135 N2 - Osmotic coefficients [phi], mean activity coefficients [gamma]±, vapor pressure p data, and excess Gibbs free energies GE of aqueous solutions of three ionic liquids 1-propyl-3-methylimidazolium bromide [PMIm]Br, 1-pentyl-3-methylimidazolium bromide [PnMIm]Br, and 1-hexyl-3-methylimidazolium bromide [HMIm]Br were determined by the vapor pressure osmometry method at four temperatures (298.15 K to 328.15 K) in intervals 10 K. From the comparison of osmotic coefficients it follows that aqueous solution of [PMIm]Br shows a more pronounced deviation from Debye-Hückel limiting law (DHLL) and vapor pressure depression more than the other studied ionic liquids which was interpreted in terms of hydrophobic interactions. The Pitzer-ion interaction and MNRTL electrolyte models satisfactorily correlate experimental osmotic coefficient data with good precision. The parameters of the Pitzer-ion interaction model are used to calculate the mean molal activity coefficients and excess Gibbs free energies. IS - 1 JF - The Journal of Chemical Thermodynamics SN - 0021-9614 EP - 96 TI - Influence of alkyl chain on the thermodynamic properties of aqueous solutions of ionic liquids 1-alkyl-3-methylimidazolium bromide at different temperatures VL - 41 SP - 90 KW - 1-alkyl-3-methylimidazolium KW - activity KW - bromide KW - coefficient KW - coefficients KW - ionic KW - liquid KW - liquids KW - mnrtl KW - model KW - osmometry KW - osmotic KW - pitzer KW - pressure KW - rtil KW - vapor AU - Shekaari, Hemayat AU - Mousavi, Sedighehnaz PY - 2009/01// UR - http://dx.doi.org/10.1016/j.jct.2008.07.011 ER -