Solubility and diffusivity of six volatile compounds in ionic liquids [BMIM][Tf2N], [BMPy][Tf2N], [BMIM][TfO] and [BMPy][TfO]
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F22%3A43922977" target="_blank" >RIV/60461373:22340/22:43922977 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.fluid.2022.113418" target="_blank" >https://doi.org/10.1016/j.fluid.2022.113418</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.fluid.2022.113418" target="_blank" >10.1016/j.fluid.2022.113418</a>
Alternative languages
Result language
angličtina
Original language name
Solubility and diffusivity of six volatile compounds in ionic liquids [BMIM][Tf2N], [BMPy][Tf2N], [BMIM][TfO] and [BMPy][TfO]
Original language description
Diffusivity and solubility of water, methanol, ethanol, 1-butanol, acetone and p-xylene in four ionic liquids (ILs) were determined microgravimetrically by studying the absorption of the vapors (without air) in the ILs at 40 °C. The studied ILs comprised of all four possible combinations of two cations [1-butyl-3-methylimidazolium, BMIM, and 1-butyl-1-mehtylpyrrolidinium, BMPy] and two anions [bis(trifluoromethylsulfonyl)imide, Tf2N, and trifluoromethanesulfonate, TfO]; data for 24 systems are reported. Higher solubility of the vapors of protic compounds (water, methanol, ethanol and 1-butanol) was observed for the ILs containing the TfO anion while higher solubility of aprotic compounds (acetone and p-xylene) was observed for ILs containing the Tf2N anion. While ILs containing BMPy cation showed discernibly higher solubilities than those containing BMIM in for 1-butanol in TfO based ILs and p-xylene in Tf2N based ILs, limited solubility changes due to the cation exchange were observed for the remaining systems. The equilibrium dissolution was parameterized using the Margules and Guggenheim, Anderson, de Boer (GAB) models. For all compounds except water, mutual diffusivity followed the relations BMIM > BMPy and Tf2N > TfO, while for water it followed BMIM > BMPy and TfO > Tf2N. Diffusion was anomalously fast with respect to the Einstein-Stokes-Sutherland equation in all studied systems presumably due to the “cage” and “jump” mechanism. Despite the observed non-ideality of the liquid phase, mutual diffusivities were practically constant over the tested ranges of vapor activity (and concentration) for most systems while thermodynamic (self) diffusivities varied with the experimental conditions. Overall, structure-property relationships were assessed for four combinations of practically relevant constituting ions and six volatile solutes at 40 °C.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/GA18-08389S" target="_blank" >GA18-08389S: Study of plasticization of polymeric membranes and thermodynamics of multicomponent sorption for the development of effective membrane separations</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Fluid Phase Equilibria
ISSN
0378-3812
e-ISSN
1879-0224
Volume of the periodical
557
Issue of the periodical within the volume
June
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
12
Pages from-to
113418
UT code for WoS article
000821374700004
EID of the result in the Scopus database
2-s2.0-85124616154