2011
DOI: 10.1021/je200790q
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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 … Show more

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Cited by 296 publications
(252 citation statements)
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“…According to the literature data and the producer information the dynamic viscosity of EMImOTF varies between 50 to 70 cP at room temperature due to the impurities and decreases noticeably with increasing temperature. 23,24 The viscosity of EMImBF 4 is 38 cP and the viscosity of EMImOTF + EMImBF 4 + 1% EMImI mixture is 41 cP (measured with Anton Paar rheometer MCR101, at 22…”
Section: Resultsmentioning
confidence: 99%
“…According to the literature data and the producer information the dynamic viscosity of EMImOTF varies between 50 to 70 cP at room temperature due to the impurities and decreases noticeably with increasing temperature. 23,24 The viscosity of EMImBF 4 is 38 cP and the viscosity of EMImOTF + EMImBF 4 + 1% EMImI mixture is 41 cP (measured with Anton Paar rheometer MCR101, at 22…”
Section: Resultsmentioning
confidence: 99%
“…To remove traces of water and volatile compounds, individual samples of each ionic liquid were dried at moderate temperature (%323 K) and at high vacuum (%10 À5 Pa), under constant stirring, and for a minimum period of 48 h. After this purification procedure, the purity of all ionic liquids samples was further checked by 1 H and 13 C NMR (and 19 F NMR for all the fluorinated ionic liquids) and showed to be P99 wt%. Moreover, the water content of each ionic liquid, after the drying step and immediately before the measurements of the surface tensions, was determined by Karl Fischer titration making use of a Metrohm 831 Karl Fischer coulometer.…”
Section: Chemicalsmentioning
confidence: 99%
“…The analysis of the drop shape was performed with the software modules SCA 20. The density values required for the calculation of the surface tensions from the drop image data were taken from literature [19].…”
Section: Apparatus and Proceduresmentioning
confidence: 99%
“…[46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65] Once more, a multivariate correlation with several quantum chemistry descriptors along with temperature as input parameters, and ln (viscosity), as the output parameter, was developed using Eureqa software.…”
Section: Viscositymentioning
confidence: 99%