Excess Enthalpies of Mixing of Piperidinium Ionic Liquids with Short-Chain Alcohols: Measurements and PC-SAFT Modeling
Kamil Paduszyński , Marek Królikowski , Urszula Domańska-Żelazna
AbstractThis work is a continuation of our systematic study on thermodynamic properties of 1-n-alkyl-1-methylpiperdinium bis[(trifluoromethyl)sulfonyl]imides homologous series of ionic liquids ([CnC1Pip][NTf2]). Excess enthalpies of mixing (HE) of four binary systems containing two ionic liquids, namely [C4C1Pip][NTf2] and [C6C1Pip][NTf2], and two short-chain alcohols, namely ethanol and 1-propanol, were measured by isothermal titration calorimetry. Alcohol-to-ionic liquid and ionic liquid-to-alcohol titration experiments were carried out at temperature T = 298.15 K and atmospheric pressure. The experimental data were modeled in terms of perturbed-chain statistical associating fluid theory (PC-SAFT). Wolbach–Sandler combining rules were adopted in order to account for ionic liquid-alcohol cross-association. The model was applied in a conventional manner (i.e., without any binary corrections) as well as in a novel predictive mode developed previously by our group [Paduszyński, K.; Domańska, U. J. Phys. Chem. B2012, 116, 5002–5018; Domańska et al. J. Phys. Chem. B2012, 116, 8191–8200]. The latter approach employs temperature-dependent binary correction fitted to experimental limiting activity coefficient of alcohol in ionic liquid.
|Journal series||Journal of Physical Chemistry B, ISSN 1520-6106|
|Publication size in sheets||0.5|
|ASJC Classification||; ;|
|Score|| = 30.0, 17-08-2020, ArticleFromJournal|
= 30.0, 17-08-2020, ArticleFromJournal
|Publication indicators||= 34; = 36; = 20.0; : 2013 = 1.194; : 2013 = 3.377 (2) - 2013=3.527 (5)|
|Citation count*||20 (2015-02-26)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.