Vapor-Liquid Equilibrium of Ionic Liquid 7-Methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium Acetate and Its Mixtures with Water

Zachariah Steven Baird, Petri Uusi-Kyyny*, Joanna Witos, Antti H. Rantamäki, Herbert Sixta, Susanne K. Wiedmer, Ville Alopaeus

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
31 Downloads (Pure)

Abstract

Ionic liquids have the potential to be used for extracting valuable chemicals from raw materials. These processes often involve water, and after extraction, the water or other chemicals must be removed from the ionic liquid, so it can be reused. To help in designing such processes, we present data on the vapor-liquid equilibrium of the system containing protic ionic liquid 7-methyl-1,5,7-triazabicyclo [ 4.4.0 ] dec-5-enium acetate, water, acetic acid, and 7-methyl-1,5,7-triazabicyclo [4.4.0] dec-5-ene. Earlier studies have only focused on mixtures of water and an ionic liquid with a stoichiometric ratio of the ions. Here, we also investigated mixtures containing an excess of the acid or base component because in real systems with protic ionic liquids, the amount of acid and base in the mixture can vary. We modeled the data using both the ePC-SAFT and NRTL models, and we compared the performance of different modeling strategies. We also experimentally determined the vapor composition for a few of the samples, but none of the modeling strategies tested could accurately predict the concentration of the acid and base components in the vapor phase.

Original languageEnglish
Pages (from-to)2405-2421
Number of pages17
JournalJournal of Chemical and Engineering Data
Volume65
Issue number5
DOIs
Publication statusPublished - 14 May 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • EQUATION-OF-STATE
  • AQUEOUS-ELECTROLYTE SOLUTIONS
  • PERTURBED-CHAIN SAFT
  • ACETIC-ACID
  • VOLUMETRIC PROPERTIES
  • THERMODYNAMIC PROPERTIES
  • SODIUM-CHLORIDE
  • OSMOTIC COEFFICIENTS
  • LITHIUM-CHLORIDE
  • BINARY-SYSTEMS

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