Temperature and pressure dependence of gas permeation in a microporous Tröger’s base polymer

Elsa Lasseuguette, Richard Malpass-Evans, Mariolino Carta, Neil McKeown, Maria-Chiara Ferrari

Research output: Contribution to journalArticlepeer-review

Abstract

Gas transport properties of PIM-EA(H2)-TB, a microporous Tröger’s base polymer, were systematically studied over a range of pressure and temperature. Permeability coefficients of pure CO2, N2, CH4 and H2 were determined for upstream pressures up to 20 bar and temperatures up to 200 °C. PIM-EA(H2)-TB exhibited high permeability coefficients in absence of plasticization phenomena. The permeability coefficient of N2, CH4 and H2 increased with increasing temperature while CO2 permeability decreased with increasing temperature as expected for a glassy polymer. The diffusion and solubility coefficients were also analysed individually and compared with other polymers of intrinsic microporosity. From these results, the activation energies of permeation, diffusion and sorption enthalpies were calculated using an Arrhenius equation.
Original languageEnglish
Pages (from-to)132
Number of pages11
JournalMembranes
Volume8
Issue number4
Early online date14 Dec 2018
DOIs
Publication statusE-pub ahead of print - 14 Dec 2018

Keywords

  • microporous polymer
  • gas permeability
  • activation energy;
  • CO2 capture

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