Densities and Derived Thermodynamic Properties of Imidazolium-, Pyridinium-, Pyrrolidinium-, and Piperidinium-Based Ionic Liquids | Zendy

Ramesh L. Gardas | Zendy; Henrique F. Costa | Zendy; Mara G. Freire | Zendy; Pedro J. Carvalho | Zendy; Isabel M. Marrucho | Zendy; I.M.A. Fonseca | Zendy; Abel G.M. Ferreira | Zendy; João A. P. Coutinho | Zendy

Open Access

Densities and Derived Thermodynamic Properties of Imidazolium-, Pyridinium-, Pyrrolidinium-, and Piperidinium-Based Ionic Liquids

Author(s) -

Ramesh L. Gardas,

Henrique F. Costa,

Mara G. Freire,

Pedro J. Carvalho,

Isabel M. Marrucho,

I.M.A. Fonseca,

Abel G.M. Ferreira,

João A. P. Coutinho

Publication year - 2008

Publication title -

journal of chemical and engineering data

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.719

H-Index - 132

eISSN - 1520-5134

pISSN - 0021-9568

DOI - 10.1021/je700670k

Subject(s) - ionic liquid , imide , chemistry , isobaric process , pyridinium , trifluoromethanesulfonate , thermodynamics , isothermal process , ion , thermal expansion , inorganic chemistry , polymer chemistry , organic chemistry , catalysis , physics

In the present work, experimental density measurements are reported along with the derived thermodynamic properties, such as the isothermal compressibility (κT), the isobaric expansivity (Rp), and the thermal pressure coefficient (γV) for imidazolium-, pyridinium-, pyrrolidinium-, and piperidinium-based ionic liquids (ILs), namely, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (C2mim)(CF3SO3), 3-methyl-1-propylpy- ridinium bis(trifluoromethylsulfonyl)imide (C3mpy)(NTf2), 1-methyl-1-propylpyrrolidinium bis(trifluoro- methylsulfonyl)imide (C3mpyr)(NTf2), 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (C4mpyr)(NTf2), and 1-methyl-1-propylpiperidinium bis(trifluoromethylsulfonyl)imide (C3mpip)(NTf2 )i n 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.

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