Prediction of ionic liquid properties. II. Volumetric properties as a function of temperature and pressure

J. Jacquemin, P. Nancarrow, D.W. Rooney, C. Hardacre, M.F.C. Gomes, P. Husson, V. Majer, A.A.H. Pádua

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116 Citations (Scopus)

Abstract

The density of ionic liquids (ILs) as a function of pressure and temperature has been modeled using a group contribution model. This model extends the calculations previously reported (Jacquemin et al. J. Chem. Eng. Data 2008) which used 4000 IL densities at 298.15 K and 600 IL densities as a function of temperature up to 423 K at 0.1 MPa to pressures up to 207 MPa by using described data in the literature and presented in this study. The densities of two different ionic liquids (butyltrimethylammonium bis(trifluoromethylsulfonyl)imide, [N][NTf], and 1-butyl-l-methyl-pyrrolidiniumbis(trifluoromethylsulfonyl)imide, [C mPyrro]-[NTf]) were measured as a function of temperature from (293 to 415) K and over an extended pressure range from (0.1 to 40) MPa using a vibrating-tube densimeter. The model is able to predict the ionic liquid densities of over 5080 experimental data points to within 0.36%. In addition, this methodology allows the calculation of the mechanical coefficients using the calculated density as a function of temperature and pressure with an estimated uncertainty of ± 20%.
Original languageEnglish
Pages (from-to)2133-2143
Number of pages11
JournalJournal of Chemical and Engineering Data
Volume53
Issue number9
DOIs
Publication statusPublished - 01 Sep 2008

Bibliographical note

Copyright 2008 Elsevier B.V., All rights reserved.

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