Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer
Elsa Lasseuguette 1
, Richard Malpass-Evans 2, Mariolino Carta 3, Neil B. McKeown 2 and Maria-Chiara Ferrari 1,*
, Richard Malpass-Evans 2, Mariolino Carta 3, Neil B. McKeown 2 and Maria-Chiara Ferrari 1,*
1
School of Engineering, University of Edinburgh, Robert Stevenson Road, Edinburgh EH9 3FB, UK
2
EastChem, School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, UK
3
Department of Chemistry, College of Science, Grove Building, Singleton Park, Swansea University, Swansea SA2 8PP, UK
*
Author to whom correspondence should be addressed.
Membranes 2018, 8(4), 132; https://doi.org/10.3390/membranes8040132
Received: 31 October 2018 / Revised: 30 November 2018 / Accepted: 5 December 2018 / Published: 14 December 2018
(This article belongs to the Special Issue Gas Transport in Glassy Polymers)
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. View Full-TextKeywords:
microporous polymer; gas permeability; activation energy; CO2 capture
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Lasseuguette, E.; Malpass-Evans, R.; Carta, M.; McKeown, N.B.; Ferrari, M.-C. Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer. Membranes 2018, 8, 132.
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