MOF-based membranes, which have appropriate MOF dispersion and suitable interaction, have shown high CO 2 permeability and significant CO 2 /CH 4 and CO 2 /N 2 selectivity. In this study, a layer of Pebax was coated on polysulfone (PSF), which this layer incorporated by various content of Cu-MOFs to improve the performance (permeability and CO 2 /CH 4 and CO 2 /N 2 selectivity) of all membranes. Characterization techniques such as SEM, TGA, BET, and gas adsorption verified that Cu-BTC was successfully dispersed into the Pebax matrix. Pure CO 2 and CH 4 gases permeation experiments were performed to investigate the impact of Cu-MOFs on the gas permeability of prepared MOF-based membranes. The “Pebax” embedded by 15 wt% CuBTC and 15 wt% of NH 2 -CuBTC over PSF support exhibited higher gas separation performance compared to the pristine one. They demonstrated a CO 2 permeability of 228.6 and 258.3 Barrer, respectively, while the blank membrane had a CO 2 permeability of 110.6 Barrer. Embedding the NH 2 -Cu-BTC intensified the interaction between incorporated MOF particles and the polymer phase that led to increase the CO 2 /CH 4 and CO 2 /N 2 selectivity. In addition, the performance of prepared membranes was evaluated at various feed pressures with the range of 2–10 bar. The CO 2 /CH 4 and CO 2 /N 2 separation was enhanced as the feed pressure surged.

中文翻译：

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Cu-MOFs掺入对Pebax薄膜纳米复合（TFN）膜气体分离的影响

基于 MOF 的膜具有适当的 MOF 分散和适当的相互作用，显示出高 CO 2 渗透性和显着的 CO 2 /CH 4 和 CO 2 /N 2 选择性。在本研究中，将一层 Pebax 涂覆在聚砜 (PSF) 上，该层加入了各种含量的 Cu-MOF，以提高所有膜的性能（渗透性和 CO 2 /CH 4 和 CO 2 /N 2 选择性） . SEM、TGA、BET 和气体吸附等表征技术验证了 Cu-BTC 成功分散到 Pebax 基质中。进行纯 CO 2 和 CH 4 气体渗透实验以研究 Cu-MOF 对制备的基于 MOF 的膜的气体渗透性的影响。与原始载体相比，在 PSF 载体上嵌入 15 wt% CuBTC 和 15 wt% NH 2 -CuBTC 的“Pebax”表现出更高的气体分离性能。它们的 CO 2 渗透率分别为 228.6 和 258.3 Barrer，而空白膜的 CO 2 渗透率为 110.6 Barrer。嵌入NH 2 -Cu-BTC 加强了引入的MOF 颗粒与聚合物相之间的相互作用，从而提高了CO 2 /CH 4 和CO 2 /N 2 的选择性。此外，在 2-10 巴范围内的各种进料压力下对制备的膜的性能进行了评估。随着进料压力的升高，CO 2 /CH 4 和CO 2 /N 2 的分离得到增强。在 2-10 巴范围内的各种进料压力下评估了制备膜的性能。随着进料压力的升高，CO 2 /CH 4 和CO 2 /N 2 的分离得到增强。在 2-10 巴范围内的各种进料压力下评估了制备膜的性能。随着进料压力的升高，CO 2 /CH 4 和CO 2 /N 2 的分离得到增强。