Densities and derived thermodynamic properties of imidazolium-, pyridinium-, pyrrolidinium-, and piperidinium-based ionic liquids
authors Gardas, RL; Costa, HF; Freire, MG; Carvalho, PJ; Marrucho, IM; Fonseca, IMA; Ferreira, AGM; Coutinho, JAP
nationality International
journal JOURNAL OF CHEMICAL AND ENGINEERING DATA
keywords EXTENDED PRESSURE RANGE; RHO-T MEASUREMENTS; PHYSICOCHEMICAL PROPERTIES; PHYSICAL-PROPERTIES; HEAT-CAPACITIES; TEMPERATURE; HEXAFLUOROPHOSPHATE; DEPENDENCE; VISCOSITY; MEMBRANES
abstract In the present work, experimental density measurements are reported along with the derived thermodynamic properties, such as the isothermal compressibility (K-T), the isobaric expansivity (alpha(p)) and the thermal pressure coefficient (gamma(v)) for imidazolium-, pyridinium-, pyrrolidinium-, and piperidinium-based ionic liquids (ILs), namely, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate [C(2)mim][CF3SO3], 3-methyl-1-propylpyridinium bis(trifluoromethylsulfonyl)imide [C(3)mpy][NTf2], 1-butly- 1-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide [C(3)mpyr][NTf2],1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide [C(4)mpyr][NTf2], and 1-methyl-1-propylpiperidinium bis(trifluorornethylsulfonyl)imide [C(3)mpip][NTf2] in the pressure (0.10 < P/MPa < 35.00) and temperature (293.15 < T/K < 393.15) domains. These ILs were chosen to provide an understanding of the influence of the cation and anion on the properties under study. Experimental densities are correlated with the Tait equation with an average absolute relative deviation (AARD) better than 0.02 %. It is shown that experimental densities are in good agreement with the densities obtained by the predictive method previously proposed by us.
publisher AMER CHEMICAL SOC
issn 0021-9568
year published 2008
volume 53
issue 3
beginning page 805
ending page 811
digital object identifier (doi) 10.1021/je700670k
web of science category Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
subject category Thermodynamics; Chemistry; Engineering
unique article identifier WOS:000254008900034
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