Thin film nanocomposite (TFN) membrane comprising Pebax®1657 and porous organic polymers (POP) for favored CO2 separation

Q2 Materials Science Journal of Membrane Science and Research Pub Date : 2021-10-30 DOI:10.22079/JMSR.2021.535579.1485

R. Abedini, Fatemeh Ranjbar, M. Ghorbani, Mitra Ghasemi

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引用次数: 3

Abstract

Global warming is a public alarming issue caused by extreme CO2 emissions. Thus, CO2 removing using TFN membranes is an effective method to improve the CO2 separation performance. Thin film nocomposite membranes composed of Pebax 1657 embedded by porous organic polymers over the porous polysulfone support used to separate CO2 from CH4 and N2 gases. Porous organic polymers were synthesized via Friedel-Crafts one-step reaction. The obtained results from field emission scanning electron microscopy and thermal gravimetric analysis revealed that the TFN membranes declared a superior compatibility between Pebax and fillers. Permeation properties of membranes were tested over various feed pressure with the range of 2–10 bar. Pure gases permeability, CO2/CH4 and CO2/N2 selectivities improved via adding porous organic polymers into the Pebax. At porous organic polymers loading of 5wt% and feed pressure of 2 bar, the CO2, CH4 and N2 permeability raised to 310.6, 27.6 and 4.5 Barrer, respectively; which exhibited a significant improvement compared to thin film composite membrane. Moreover, the CO2/CH4 and CO2/N2 selectivities also increased to 11.25 and 70.04; respectively. Obtained results reveladed that the membranes performance was enhanced as the feed gas pressure increased. TFN containing 5wt% porous organic polymers implies a CO2 permeability of 348.4 Barrer at feed pressure of 10 bar.

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薄膜纳米复合材料（TFN）膜，包括Pebax®1657和多孔有机聚合物（POP），用于有利的CO2分离

全球变暖是一个由极端二氧化碳排放引起的公众担忧的问题。因此，使用TFN膜去除CO2是提高CO2分离性能的有效方法。由Pebax 1657组成的薄膜无复合膜，由多孔有机聚合物嵌入多孔聚砜载体上，用于从CH4和N2气体中分离CO2。采用Friedel-Crafts一步反应合成了多孔有机聚合物。场发射扫描电子显微镜和热重分析的结果表明，TFN膜在Pebax和填料之间具有优异的相容性。在2-10巴的不同进料压力下测试了膜的渗透性能。纯气体渗透率、CO2/CH4和CO2/N2选择性通过向Pebax中添加多孔有机聚合物而提高。在5wt%的多孔有机聚合物负载和2巴的进料压力下，CO2、CH4和N2的渗透率分别提高到310.6、27.6和4.5Barrer；其与薄膜复合膜相比表现出显著的改进。此外，CO2/CH4和CO2/N2的选择性也分别提高到11.25和70.04；分别地结果表明，随着原料气压力的增加，膜的性能得到了提高。含5wt%多孔有机聚合物的TFN意味着在10巴的进料压力下CO2渗透率为348.4Barrer。

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来源期刊

Journal of Membrane Science and Research Materials Science-Materials Science (miscellaneous)

CiteScore

4.00

自引率

0.00%

发文量

审稿时长

8 weeks

期刊介绍： The Journal of Membrane Science and Research (JMSR) is an Open Access journal with Free of Charge publication policy, which provides a focal point for academic and industrial chemical and polymer engineers, chemists, materials scientists, and membranologists working on both membranes and membrane processes, particularly for four major sectors, including Energy, Water, Environment and Food. The journal publishes original research and reviews on membranes (organic, inorganic, liquid and etc.) and membrane processes (MF, UF, NF, RO, ED, Dialysis, MD, PV, CDI, FO, GP, VP and etc.), membrane formation/structure/performance, fouling, module/process design, and processes/applications in various areas. Primary emphasis is on structure, function, and performance of essentially non-biological membranes.