Viscosity and Thermal Conductivity of 1-Hexyl-3-methylimidazolium Tetrafluoroborate and 1-Octyl-3-methylimidazolium Tetrafluoroborate at Pressures up to 20 MPa

Abstract

Viscosity and thermal conductivity values are reported for a series of 1-alkyl-3-methylimidazolium tetrafluoroborate compounds with hexyl (1-hexyl-3-methylimidazolium tetrafluoroborate) and octyl (1-octyl-3-methylimidazolium tetrafluoroborate) groups. The viscosity was measured with a rolling-ball viscometer at 293.15 K to 353.15 K and pressures up to 20.0 MPa. The experimental values were correlated with a hybrid VFT-Tait equation. The thermal conductivity was measured using the transient short hot-wire method at 294 K to 335 K and pressures up to 20.0 MPa. The experimental values at 293.15 K and 0.1 MPa agreed with the predicted values proposed by Fröba et al.

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“…Thus, all data used were chosen from specific databases, and correspond to those claimed by the authors as being experimentally determined [5,[19][20][21][22][23][24][25][26]. Data available in the literature obtained from theoretical methods, correlations or extrapolations of any kind were not considered.…”

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A group contribution method to predict the thermal conductivity λ(T,P) of ionic liquids

“…Thus, all data used were chosen from specific databases, and correspond to those claimed by the authors as being experimentally determined [7,[13][14][15][16][17][18][19][20][21][22]. Data available in the literature obtained from theoretical methods, correlations or extrapolations of any kind were not considered.…”