Abstract
Thermal conductivities are reported for a series of 1-alkyl-3-methylimidazolium hexafluorophosphates having butyl, hexyl, and octyl groups, which are expressed by [bmim][PF6], [hmim][PF6], and [omim][PF6], respectively. The experimental method used was a transient short-hot-wire method. Since only a small amount of sample liquid is required, this method was found to be effective for the thermal-conductivity measurements of ionic liquids (ILs). The experimental temperatures ranged from 294 to 335 K at pressures up to 20 MPa. The values of the thermal conductivities of ILs at normal pressure are similar to those of benzene. It was found that an effect of the length of the alkyl chain on the thermal conductivities in ILs is negligible. From the data for the thermal conductivity and viscosity at 293.15 K and 0.1 MPa of ILs and normal alkanes, a simple correlation was developed based on the Mohanty theory. From comparisons between the thermal conductivities of ILs and those of organic liquids (n-hexane, benzene, and methanol), the temperature and pressure dependences of the thermal conductivity of ILs are relatively weak.
Similar content being viewed by others
References
Welton T. (1999) . Chem. Rev. 99: 2071
Wasserscheid P., Keim W. (2000) . Angew. Chem. Int. Ed. 39: 3772
Dupont J., de Souza R.F., Suarez P.A.Z. (2002) . Chem. Rev. 102: 3667
Zhang Z.C. (2006) . Adv. Catal. 49: 153
J.D. Holbrey, R.D. Rogers, in Ionic Liquids, ed. by R.D. Rogers, K.R. Seddon, ACS Symp. Ser. 818, American Chemical Society, Washington D.C. (2002) p. 446
Freemantle M. (2003) . Chem. Eng. News 81: 9
P. Wasserscheid, in Ionic Liquids in Synthesis, ed. by P. Wasserscheid, T. Welton (Wiley-VCH, Weinheim, Germany, 2003)
Short P.L. (2006) . Chem. Eng. New. 84: 15
Seddon K.R., Stark A., Torres M.J. (2000) . Pure Appl. Chem. 72: 2275
Gu Z.Y., Brennecke J.F. (2002) . J. Chem. Eng. Data 47: 339
Seddon K.R., Stark A., Torres M.J. (2002) . ACS Symp. Ser. 819: 34
Kabo G.J., Blokhin A.V., Paulechka Y.U., Kabo A.G., Shymanovich M.P., Magee J.W. (2004) . J. Chem. Eng. Data 49: 453
Fredlake C.P., Crosthwaite J.M., Hert D.G., Aki S.N.V.K., Brennecke J.F. (2004) . J. Chem. Eng. Data 49: 954
de Azevedo R.G., Esperanca J.M.S.S., Najdanovic-Visak V., Visak Z.P., Guedes H.J.R., da Ponte M.N., Rebelo L.P.N. (2005) . J. Chem. Eng. Data 50: 997
Noda A., Hayamizu K., Watanabe M. (2001) . J. Phys. Chem. B 105: 4603
Okoturo O.O., van der Noot T.J. (2004) . J. Electroanal. Chem. 568: 167
Tomida D., Kumagai A., Qiao K., Yokoyama C. (2006) . Int. J. Thermophys. 27: 39
Van Valkenburg M.E., Vaughn R.L., Williams M., Wilkes J.S. (2005) . Thermochim. Acta 425: 181
Tomida D., Kenmochi S., Tsukada T., Yokoyama C. (2006) . Netsu Bussei 20: 173
Fujii M., Zhang X., Imaishi N., Fujiwara S., Sakamoto T. (1997) . Int. J. Thermophys. 18: 327
Zhang X., Hendro W., Fujii M., Tomimura T., Imaishi N. (2002) . Int. J. Thermophys. 23: 1077
Zhang X., Fujii M. (2003) . Polym. Eng. Sci. 43: 1755
Kumagai A., Tomida D., Yokoyama C. (2006) . Int. J. Thermophys. 27: 376
Ramires M.L.V., Nieto de Castro C.A., Nagasaka Y., Nagashima A., Assael M.J., Wakeham W.A. (1995) . J. Phys. Chem. Ref. Data 24: 1377
Watanabe H., Seong D.J. (2002) . Int. J. Thermophys. 23: 337
J.G. Huddleston, H.D. Willauer, R.P. Swatloski, A.E. Visser, R.D. Rogers, Chem. Commun. 1765 (1998)
Cull S.G., Holbrey J.D., Vargas-Mora V., Seddon K.R., Lye G.J. (2000) . Biotechnol. Bioeng. 69: 227
Nagasaka Y., Nagashima A. (1981) . Ind. Eng. Chem. Fundam. 20: 216
Kashiwagi H., Hashimoto T., Tanaka Y., Kubota H., Makita T. (1982) . Int. J. Thermophys. 3: 201
Assael M.J., Karagiannidis E., Wakeham W.A. (1992) . Int. J. Thermophys. 13: 735
Ogiwara H., Arai Y., Saito S. (1980) . Ind. Eng. Chem. Fundam. 19: 295
Shulga V.M., Eldarov F.G., Atanov Yu.A., Kuyumchev A.A. (1986) . Int. J. Thermophys. 7: 1147
Turnbull A.G. (1961) . Austr. J. Appl. Sci. 12: 30
Takeuchi M., Suzuki M., Nagata K. (1983) . Trans. JSME B49: 1468
Mohanty S.R. (1951) . Nature 168: 42
P.E. Liley, T. Makita, Y. Tanaka, in CINDAS Data Series on Material Properties, vol V-1, ed. by C.Y. Ho (Hemisphere, New York, 1988)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Tomida, D., Kenmochi, S., Tsukada, T. et al. Thermal Conductivities of [bmim][PF6], [hmim][PF6], and [omim][PF6] from 294 to 335 K at Pressures up to 20 MPa. Int J Thermophys 28, 1147–1160 (2007). https://doi.org/10.1007/s10765-007-0241-8
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10765-007-0241-8