Measurements and correlation of high-pressure densities of imidazolium-based ionic liquids

authors	Tome, LIN; Carvalho, PJ; Freire, MG; Marrucho, IM; Fonseca, IMA; Ferreira, AGM; Coutinho, JAP; Gardas, RL
nationality	International
journal	JOURNAL OF CHEMICAL AND ENGINEERING DATA
keywords	PLUS METHANOL SYSTEM; RHO-T MEASUREMENTS; EQUATION-OF-STATE; THERMODYNAMIC PROPERTIES; BINARY-MIXTURES; 1-BUTYL-3-METHYLIMIDAZOLIUM TETRAFLUOROBORATE; 1-ETHYL-3-METHYLIMIDAZOLIUM ETHYLSULFATE; PHYSICAL-PROPERTIES; EXCESS VOLUMES; 333.15 K
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(upsilon),) for imidazolium-based ionic liquids (ILs), namely, 1-ethyl-3-methylimidazolium methylsulfate [C(2)mim][MeSO4], 1-ethyl-3-methylimidazolium ethylsulfate [C(2)mim][EtSO4], 1,3-diethylimidazolium bis(trifluoromethylsulfonyl)imide [C2mim][Tf2N], and 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [C(10)mim][Tf2N] in the pressure (0.10 < P/MPa < 35.00) and temperature (293.15 < T/K < 393.15) domains. It is shown that experimental densities are in good agreement with the predicted densities obtained by the Gardas and Coutinho method and the correlation using the Tait equation and Sanchez-Lacombe equation of state.
publisher	AMER CHEMICAL SOC
issn	0021-9568
year published	2008
volume	53
issue	8
beginning page	1914
ending page	1921
digital object identifier (doi)	10.1021/je800316b
web of science category	Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
subject category	Thermodynamics; Chemistry; Engineering
unique article identifier	WOS:000258503700038