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

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Baird , Z S , Uusi-Kyyny , P , Witos , J , Rantamäki , A H , Sixta , H , Wiedmer , S K & Alopaeus , V 2020 , ' Vapor-Liquid Equilibrium of Ionic Liquid 7-Methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium Acetate and Its Mixtures with Water ' , Journal of Chemical and Engineering Data , vol. 65 , no. 5 , pp. 2405-2421 . https://doi.org/10.1021/acs.jced.9b01039

Title: Vapor-Liquid Equilibrium of Ionic Liquid 7-Methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium Acetate and Its Mixtures with Water
Author: Baird, Zachariah Steven; Uusi-Kyyny, Petri; Witos, Joanna; Rantamäki, Antti H.; Sixta, Herbert; Wiedmer, Susanne K.; Alopaeus, Ville
Contributor: University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
Date: 2020-05-14
Language: eng
Number of pages: 17
Belongs to series: Journal of Chemical and Engineering Data
ISSN: 0021-9568
URI: http://hdl.handle.net/10138/316128
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.
Subject: EQUATION-OF-STATE
AQUEOUS-ELECTROLYTE SOLUTIONS
PERTURBED-CHAIN SAFT
ACETIC-ACID
VOLUMETRIC PROPERTIES
THERMODYNAMIC PROPERTIES
SODIUM-CHLORIDE
OSMOTIC COEFFICIENTS
LITHIUM-CHLORIDE
BINARY-SYSTEMS
116 Chemical sciences
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