Loading...

Solubility of H2S in ionic liquids [hmim][PF6], [hmim][BF4], and [hmim][Tf2N]

Rahmati Rostami, M ; Sharif University of Technology | 2009

797 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.jct.2009.04.014
  3. Publisher: 2009
  4. Abstract:
  5. The solubility of hydrogen sulphide in three ionic liquids, viz. 1-hexyl-3-methylilmidazolium hexafluorophosphate ([hmim][PF6]), 1-hexyl-3-methylimidazolium tetrafluoroborate ([hmim][BF4]), and 1-hexyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([hmim][Tf2N]), at temperatures ranging from 303.15 K to 343.15 K and pressures up to 1.1 MPa were determined. The solubility values were correlated using the Krichevsky-Kasarnovsky equation and Henry's constants were obtained at different temperatures. Partial molar thermodynamic functions of solvation such as standard Gibbs free energy, enthalpy, and entropy were calculated from the solubility results. Comparison of the values obtained show that the solubility of H2S in these three ionic liquids was in the sequence: [hmim][BF4] > [hmim][PF6] ≈ [hmim][Tf2N]. © 2009 Elsevier Ltd. All rights reserved
  6. Keywords:
  7. Gas solubility ; Gibbs free energy of solvation ; Henry's constant ; Hydrogen sulphide ; Ionic liquid ; Bis(trifluoromethane sulfonyl)imide ; Gas solubility ; Gibbs free energy of solvation ; Henry's constant ; Henry's constants ; Hexafluorophosphate ; HMIM PF ; Hydrogen sulphide ; Solubility value ; Tetrafluoroborate ; Thermodynamic functions ; Free energy ; Gibbs free energy ; Hydrogen ; Hydrogen sulfide ; Ionization of liquids ; Ions ; Solubility ; Solvation ; Ternary systems ; Ionic liquids
  8. Source: Journal of Chemical Thermodynamics ; Volume 41, Issue 9 , 2009 , Pages 1052-1055 ; 00219614 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0021961409000949