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

Rile Ge; Christopher Hardacre; Johan Jacquemin; Paul Nancarrow; David W. Rooney

doi:10.1021/je800335v

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

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

^*Corresponding author for this work

Queen's University Belfast

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	2148-2153
Number of pages	6
Journal	Journal of Chemical & Engineering Data
Volume	53
Issue number	9
DOIs	https://doi.org/10.1021/je800335v
Publication status	Published - Sept 2008

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10.1021/je800335v

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title = "Heat capacities of ionic liquids as a function of temperature at 0.1 MPa. Measurement and prediction",

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.",

author = "Rile Ge and Christopher Hardacre and Johan Jacquemin and Paul Nancarrow and Rooney, \{David W.\}",

year = "2008",

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journal = "Journal of Chemical \& Engineering Data",

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T1 - Heat capacities of ionic liquids as a function of temperature at 0.1 MPa. Measurement and prediction

AU - Ge, Rile

AU - Hardacre, Christopher

AU - Jacquemin, Johan

AU - Nancarrow, Paul

AU - Rooney, David W.

PY - 2008/9

Y1 - 2008/9

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/53549135763

U2 - 10.1021/je800335v

DO - 10.1021/je800335v

M3 - Article

AN - SCOPUS:53549135763

SN - 0021-9568

VL - 53

SP - 2148

EP - 2153

JO - Journal of Chemical & Engineering Data

JF - Journal of Chemical & Engineering Data

IS - 9

ER -

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

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