Lasseuguette Elsa, Malpass-Evans Richard, Carta Mariolino, McKeown Neil B, Ferrari Maria-Chiara
School of Engineering, University of Edinburgh, Robert Stevenson Road, Edinburgh EH9 3FB, UK.
EastChem, School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, UK.
Membranes (Basel). 2018 Dec 14;8(4):132. doi: 10.3390/membranes8040132.
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 CO 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.
对微孔特罗格碱聚合物PIM-EA(H₂)-TB在一定压力和温度范围内的气体传输特性进行了系统研究。测定了纯CO₂、N₂、CH₄和H₂在高达20巴的上游压力和高达200°C的温度下的渗透系数。PIM-EA(H₂)-TB在没有增塑现象的情况下表现出高渗透系数。N₂、CH₄和H₂的渗透系数随温度升高而增加，而CO的渗透系数随温度升高而降低，这对于玻璃态聚合物来说是预期的。还分别分析了扩散系数和溶解度系数，并与其他固有微孔聚合物进行了比较。根据这些结果，使用阿伦尼乌斯方程计算了渗透活化能、扩散活化能和吸附焓。
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