Thermal conductivities of ionic liquids over the temperature range from 293 K to 353 K

Rile Ge, Christopher Hardacre*, Paul Nancarrow, David W. Rooney

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

139 Citations (Scopus)

Abstract

The thermal conductivities of 11 ionic liquids were determined, over the temperature range from 293 K to 353 K, at atmospheric pressure, using an apparatus based on the transient hot-wire method. For each of the ionic liquids studied, the thermal conductivities were found to be between (0.1 and 0.2) W.m(-1).K-1, with a slight decrease observed on increasing temperature. The uncertainty is estimated to be less than +/- 0.002 W.m(-1).K-1. In all cases, a linear equation was found to give a good fit to the data. The effects of water content and chloride content on the thermal conductivities of some of the ionic liquids were investigated. In each case, the thermal conductivities of the water + ionic liquid and chloride + ionic liquid binary mixtures were found to be less than the weighted average of the pure component thermal conductivities. This effect was adequately modeled using the Jamieson correlation. Chloride contamination at typical postsynthesis levels was found to have no significant effect on the thermal conductivities of the ionic liquid studied.

Original languageEnglish
Pages (from-to)1819-1823
Number of pages5
JournalJournal of Chemical and Engineering Data
Volume52
Issue number5
DOIs
Publication statusPublished - 2007

Keywords

  • SOLVENTS
  • WATER
  • MIXTURES
  • CATALYSIS
  • FLUIDS

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