Solubility of H2S in ammonium-based ionic liquids
authors Sousa, JMMV; Sintra, TE; Ferreira, AGM; Carvalho, PJ; Fonseca, IMA
nationality International
journal JOURNAL OF CHEMICAL THERMODYNAMICS
author keywords Gas solubility; H2S; Ammonium Ionic liquid; CPA EoS
keywords EQUATION-OF-STATE; HYDROGEN-SULFIDE; CO2; TEMPERATURE; HEXAFLUOROPHOSPHATE; HYDROFLUOROCARBONS; DIFFUSION; MIXTURE
abstract This work is inserted in a research program that consists mainly in the experimental and theoretical study of gas/liquid solubility in ionic liquids (ILs). In this study the experimental data of hydrogen sulfide solubility in ammonium-based ionic liquids, namely 2-hydroxyethylammonium acetate [2-HEA][Ace], bis(2-hydroxyethyl)ammonium acetate [B-2-HEA] [Ace] and 2-hydroxyethyldiethylammonium hydrogen diacetate [2-HEDEA][H(Ace)(2)], were determined using a volumetric method in the 298 K to 318 K temperature range and at atmospheric pressure. The ionic liquids are functionalized with the OH group in the ammonium-based cations, in order to study the influence of hydroxyl group in the formation of hydrogen bonds between the IL-IL and IL-gas. The data gathered is modelled with the Cubic Plus Association Equation of State (CPA EoS), considering the association schemes four-sites (4C) for hydrogen sulfide and two-sites (2B) for the ILs ([2-HEA] [Ace], [B-2-HEA][Ace] and [2-HEDEA][H(Ace)(2)]). (C) 2020 Elsevier Ltd.
publisher ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
issn 0021-9614
isbn 1096-3626
year published 2021
volume 154
digital object identifier (doi) 10.1016/j.jct.2020.106336
web of science category 6
subject category Thermodynamics; Chemistry, Physical
unique article identifier WOS:000604967500007
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