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Phase behavior of mixture of supercritical CO2 + ionic liquid: Thermodynamic consistency test of experimental data

Eslamimanesh, A ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1002/aic.14136
  3. Publisher: 2013
  4. Abstract:
  5. Various models have been applied composed of the Peng-Robinson equation of state (PR-EoS) and the Soave-Redlich-Kwong equation of state (SRK-EoS) associated with three mixing rules including the following: Wong-Sandler (WS), van der Waals one (vdW1), and van der Waals two (vdW2) for phase behavior modeling of mixtures of supercritical CO2+different ionic liquids in vapor-liquid equilibrium (VLE) region. It has been found that the PR EoS implying the WS mixing rule can be used as a reliable thermodynamic model to perform a thermodynamic consistency test on the experimental data of phase behaviors of the supercritical CO2+ionic liquid systems (19 commonly-used ionic liquids have been studied). The results show that 40% of the experimental data seem to be thermodynamically consistent, 55.5% seem to be thermodynamically inconsistent, and 4.5% seem to be not fully consistent
  6. Keywords:
  7. Ionic liquid ; Phase behavior ; Supercritical CO2 ; Thermodynamic consistency test ; Cubic equation of state ; Peng-Robinson equation of state ; Phase behavior model ; Soave-redlich-kwong equation of state ; Supercritical CO ; Thermodynamic consistency ; Thermodynamic model ; Vapor-liquid equilibrium ; Carbon dioxide ; Equations of state ; Mixing ; Mixtures ; Thermodynamics ; Van der Waals forces ; Ionic liquids
  8. Source: AIChE Journal ; Volume 59, Issue 10 , 2013 , Pages 3892-3913 ; 00011541 (ISSN)
  9. URL: http://onlinelibrary.wiley.com/doi/10.1002/aic.14136/abstract