Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/10271
Title: PρT Measurements of Imidazolium-Based Ionic Liquids
Authors: Gardas, Ramesh L. 
Freire, Mara G. 
Carvalho, Pedro J. 
Marrucho, Isabel M. 
Fonseca, Isabel M. A. 
Ferreira, Abel G. M. 
Coutinho, João A. P. 
Issue Date: 13-Sep-2007
Publisher: American Chemical Society
Citation: Journal of Chemical & Engineering Data. 52:5 (2007) 1881-1888
Abstract: Experimental density measurements are reported, and the derived thermodynamic properties, such as the isothermal compressibility, the isobaric expansivity, and the thermal pressure coefficient are presented as Supporting Information for several imidazolium-based ionic liquids (ILs), namely, 1-ethyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide [C2mim][NTf2], 1-heptyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide [C7mim][NTf2], 1-octyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide [C8mim][NTf2], 1-ethyl-3-methyl-imidazolium tetrafluoroborate [C2mim][BF4], and 1-butyl-3-methyl-imidazolium tricyanomethane [C4mim][C(CN)3] in the pressure (0.10 < p/MPa < 30.00) and temperature (293.15 < T/K < 393.15) domains. These ILs were chosen to provide an understanding of the influence of the cation alkyl chain length and the anion influence on the properties under study. Experimental densities are correlated with the Tait equation with an average absolute deviation (AAD) less than 0.04 %. Experimental densities are in good agreement with the densities obtained by some recent predictive methods proposed in the literature.
URI: http://hdl.handle.net/10316/10271
ISSN: 0021-9568
DOI: 10.1021/je700205n
Rights: openAccess
Appears in Collections:FCTUC Eng.Química - Artigos em Revistas Internacionais

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