Solubility and diffusivity of six volatile compounds in ionic liquids [BMIM][Tf2N], [BMPy][Tf2N], [BMIM][TfO] and [BMPy][TfO]

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Solubility and diffusivity of six volatile compounds in ionic liquids [BMIM][Tf2N], [BMPy][Tf2N], [BMIM][TfO] and [BMPy][TfO]

Popis výsledku v původním jazyce

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 &gt; BMPy and Tf2N &gt; TfO, while for water it followed BMIM &gt; BMPy and TfO &gt; 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.

Název v anglickém jazyce

Solubility and diffusivity of six volatile compounds in ionic liquids [BMIM][Tf2N], [BMPy][Tf2N], [BMIM][TfO] and [BMPy][TfO]

Popis výsledku anglicky

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 &gt; BMPy and Tf2N &gt; TfO, while for water it followed BMIM &gt; BMPy and TfO &gt; 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA18-08389S" target="_blank" >GA18-08389S: Studium plastifikace polymerních membrán a termodynamiky multikomponentní sorpce pro zefektivnění membránových separačních procesů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Fluid Phase Equilibria

ISSN

0378-3812

e-ISSN

1879-0224

Svazek periodika

557

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

113418

Kód UT WoS článku

000821374700004

EID výsledku v databázi Scopus

2-s2.0-85124616154