Thermophysical Characterization of Ionic Liquids Able To Dissolve Biomass

authors	Freire, MG; Teles, ARR; Rocha, MAA; Schroder, B; Neves, CMSS; Carvalho, PJ; Evtuguin, DV; Santos, LMNBF; Coutinho, JAP
nationality	International
journal	JOURNAL OF CHEMICAL AND ENGINEERING DATA
keywords	HEAT-CAPACITIES; COMPOSITION DEPENDENCE; ATMOSPHERIC-PRESSURE; BINARY-MIXTURES; SMALL SAMPLES; CELLULOSE; WATER; TEMPERATURE; DISSOLUTION; DENSITY
abstract	Among new potential solvents for lignocellulosic materials, ionic liquids (ILs) are attracting considerable attention. Hence, the knowledge of the thermophysical properties of such fluids is essential for the design of related industrial processes. Therefore, in this work, a set of thermophysical properties, namely, density, viscosity, and refractive index, as a function of temperature, and isobaric thermal expansivity and heat capacities at a constant temperature, were determined for eight ionic liquids with the 1-ethyl-3-methylimidazolium cation combined with the following anions: acetate, methylphosphonate, methanesulfonate, trifluoromethanesulfonate, dicyanamide, thiocyanate, tosylate, and dimethylphosphate. Imidazolium-based HA were chosen since these are the most studied ionic fluids in biomass dissolution approaches, while a large array of anions was investigated because it was already demonstrated that it is the IL anion that mainly governs the dissolution.
publisher	AMER CHEMICAL SOC
issn	0021-9568
year published	2011
volume	56
issue	12
beginning page	4813
ending page	4822
digital object identifier (doi)	10.1021/je200790q
web of science category	Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
subject category	Thermodynamics; Chemistry; Engineering
unique article identifier	WOS:000297608800075