To remove volatile organic compounds (VOCs) from air, N₂ or other waste gas streams in industrial processes is significant to the environmental protection and human health, as well as gain the opportunity to reuse these valuable chemicals. Mixed matrix membranes (MMMs) based on metal-organic frameworks (MOFs) have been proved to have potential application in this field. In this work, MIL-101 and UiO-66 are selected to construct MMMs for efficient ethylbenzene separation because of following factors: (1) the high ethylbenzene adsorption capacities; (2) the three-dimensional channels with large pore size; and (3) the ideal hydrothermal stability of structures. MIL-101@Pebax and UiO-66@Pebax MMMs have been prepared in an environment-friendly way and evaluated for the ethylbenzene/N₂ separation performance. SEM, TGA, FITR and XRD results indicate that continuous MMMs with different filler loading ratios have been fabricated successfully. The results show that MIL-101@Pebax and UiO-66@Pebax with the MOF loading radio of 20 wt% possess ethylbenzene/N₂ permselectivity of 284 and 100 respectively at 25 °C, 0.05 MPa and moderate feed ethylbenzene concentration (1000 ppm), which increased by 10.5 and 3.0 times compared with the pristine Pebax membrane. Effects of upstream pressure, feed concentration, and operating temperature on separation performance have been investigated for ethylbenzene/N₂ separation. Due to the selective adsorption capacity to ethylbenzene, as well as the large pore size of MIL-101(Cr), MIL-101@Pebax can be applied as efficient membrane materials in ethylbenzene capture system for high concentration region at ambient temperature.

在工业过程中从空气，N ₂或其他废气流中去除挥发性有机化合物（VOC）对环境保护和人体健康至关重要，并有机会再利用这些有价值的化学物质。基于金属有机骨架（MOF）的混合基质膜（MMM）已被证明在该领域具有潜在的应用。在这项工作中，由于以下因素，选择MIL-101和UiO-66来构建用于有效分离乙苯的MMM：（1）高乙苯吸附能力；（2）孔径大的三维通道；（3）理想的结构水热稳定性。MIL-101 @ Pebax和UiO-66 @ Pebax MMM已通过环保方式制备并评估了乙苯/ N ₂分离性能。SEM，TGA，FITR和XRD结果表明，已经成功制备了具有不同填料填充率的连续MMM。结果表明，MOF负载比为20 wt％的MIL-101 @ Pebax和UiO-66 @ Pebax在25°C，0.05 MPa和适度进料乙苯浓度（1000 ppm）下，乙苯/ N _2的选择性渗透率分别为284和100。 ），与原始Pebax膜相比，分别增加了10.5和3.0倍。研究了乙苯/ N ₂的上游压力，进料浓度和操作温度对分离性能的影响分离。由于对乙苯的选择性吸附能力以及MIL-101（Cr）的大孔径，MIL-101 @ Pebax可以用作乙苯捕集系统中环境温度高浓度区域的高效膜材料。