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Separation of Acidic Gases from Methane by Supported Ionic Liquid Membranes

Shahkaramipour, Nima | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 43943 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Seifkordi, Ali Akbar; Adibi, Mina
  7. Abstract:
  8. Supported ionic liquid membranes are prepared by filling the pores of a porous membrane with ionic liquids. Permeability values of carbon dioxide and methane and also selectivity value of CO2⁄CH4 through ionic liquids stabilized on porous alumina membrane supports have been experimentally investigated. We have used [hmim][Tf2N] and two synthesized ionic liquids, 1,6-Di(3-methylimidazolium)hexane bis(trifluoromethylsulfonyl)imide (h[mim]2[Tf2N]2) and 1,3-Di(3-methylimidazolium)propane bis(trifluoromethylsulfonyl)imide (pr[mim]2[Tf2N]2) in our research. The experiments have been done in the temperature range of 27–45 ℃ and pressures of 10–50 kPa and the impact of the temperature and pressure variations on values of the permeability and selectivity has been investigated. The results showed that the permeability values for both two gases through all of the ionic liquids increase with increasing temperature whereas, the pressure variations does not have effect on the permeability values. The highest value for CO2 and CH4 permeability is related to [hmim][Tf2N] and the highest value for selectivity is related to pr[mim]2[Tf2N]2.
    Finally a correlation was presented to relate carbon dioxide permeability values through two synthesized ionic liquids to viscosity of these liquids
  9. Keywords:
  10. Ionic Liquids ; Carbon Dioxide ; Porous Membrane ; Permeance ; Selectivity

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