Pebax^®/polyethylene glycol blend thin film composite membranes for CO₂ separation: Performance with mixed gases

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• 作者：Anja Car ; Chrtomir Stropnik ; Wilfredo Yave ; Klaus-Viktor Peinemann
• 关键词：Pebax^&#xae ; ; Thin film composite membranes ; CO₂ separation ; Mixed gases
• 刊名：Separation and Purification Technology
• 出版年：2008
• 出版时间：1 August 2008
• 年：2008
• 卷：62
• 期：1
• 页码：110-117
• 全文大小：978 K

文摘

The paper describes the performance of Pebax^®/polyethylene glycol (PEG) blend thin film composite membranes for CO₂ separation from gas mixtures containing H₂, N₂ and CH₄. Membranes were tested at different conditions; temperature and pressure dependence of gas flux and selectivity were explored. The temperature dependence was correlated with the Arrhenius equation to determine the activation energy of single gas permeation. Single and mixed gas permeation was measured for different pressures at 293 K up to 20 bar. Improved permeabilities and CO₂/H₂ selectivities were obtained in the newly developed composite membranes.