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Group contribution lattice fluid equation of state for CO 2 –ionic liquid systems: An experimental and modeling study
Author(s) -
Dai Chengna,
Lei Zhigang,
Wang Wei,
Xiao Li,
Chen Biaohua
Publication year - 2013
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.14166
Subject(s) - solubility , ionic liquid , thermodynamics , equation of state , chemistry , group contribution method , work (physics) , group (periodic table) , phase equilibrium , organic chemistry , physics , phase (matter) , catalysis
The group contribution lattice fluid equation of state (GCLF EOS) was first extended to predict the thermodynamic properties for carbon dioxide (CO 2 )–ionic liquid (IL) systems. The group interaction parameters of CO 2 with IL groups were obtained by means of correlating the exhaustively collected experimental solubility data at high temperatures (above 278.15 K). New group parameters between CO 2 and IL groups were added into the current parameter matrix. It was verified that GCLF EOS with two kinds of mixing rules could be used for predicting the CO 2 solubility in ILs, and volume expansivity of ILs upon the addition of CO 2 , as well as identifying the new structure–property relation. Moreover, it is the first work on the measurement of the solubility of CO 2 in ILs at low temperatures (below 278.15 K), manifesting the applicability of predictive GCLF EOS over a wider temperature range. © 2013 American Institute of Chemical Engineers AIChE J , 59: 4399–4412, 2013
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