Heat capacities of ionic liquids as a function of temperature at 0.1 MPa. measurement and prediction

R. Ge, Christopher Hardacre, Johan Jacquemin, Paul Nancarrow, David Rooney

Research output: Contribution to journalArticlepeer-review

138 Citations (Scopus)

Abstract

Heat capacities of nine ionic liquids were measured from (293 to 358) K by using a heat flux differential scanning calorimeter. The impact of impurities (water and chloride content) in the ionic liquid was analyzed to estimate the overall uncertainty. The Joback method for predicting ideal gas heat capacities has been extended to ionic liquids by the generation of contribution parameters for three new groups. The principle of corresponding states has been employed to enable the subsequent calculation of liquid heat capacities for ionic liquids, based on critical properties predicted using the modified Lydersen-Joback-Reid method, as a function of the temperature from (256 to 470) K. A relative absolute deviation of 2.9% was observed when testing the model against 961 data points from 53 different ionic liquids reported previously and measured within this study.
Original languageEnglish
Pages (from-to)2148-2153
Number of pages6
JournalJournal of Chemical and Engineering Data
Volume53
Issue number9
DOIs
Publication statusPublished - Sep 2008

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

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