Mixed gas sorption in glassy polymeric membranes. III. CO₂/CH₄ mixtures in a polymer of intrinsic microporosity (PIM-1): Effect of temperature

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• 作者：Aweke Elias Gemeda^a ; Maria Grazia De Angelis^a ; ; Naiying Du^b ; Nanwen Li^c ; Michael D. Guiver^d ; Giulio C. Sarti^a
• 关键词：PIM ; Sorption ; CO2/CH4 separation ; Solubility selectivity ; Heat of sorption ; Temperature effect
• 刊名：Journal of Membrane Science
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：524
• 期：Complete
• 页码：746-757
• 全文大小：1521 K
• 卷排序：524

文摘

Mixed gas sorption of CO2/CH4 in PIM-1 was measured between 25 and 50 °C. Competition dominates the process, with mixed gas solubility lower than pure value CO2 uptake is less affected by competition, thus solubility-selectivity is higher than ideal. The extent of competition increases with 2nd gas concentration and with temperature. Selectivity vs. solubility departure functions show a generalized behaviour