Ultrapermeable Thin Film ZIF‐8/Polyamide Membrane for H2/CO2 Separation at High Temperature without Using Sweep Gas,Advanced Materials Interfaces

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Ultrapermeable Thin Film ZIF‐8/Polyamide Membrane for H2/CO2 Separation at High Temperature without Using Sweep Gas
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2018-07-12 , DOI: 10.1002/admi.201800647
Javier Sánchez-Laínez ₁ , Lorena Paseta ₁ , Marta Navarro ₁ , Beatriz Zornoza ₁ , Carlos Téllez ₁ , Joaquín Coronas ₁

Affiliation

The use of thin film composites containing metal–organic frameworks (MOFs) as filler is of widespread interest for nanofiltration issues, since their thin selective layer allows a high permeation flow. The application of this kind of membranes for gas separation should provide a better permeance in comparison with other polymeric membranes and a reduction in the amount of MOF required for their fabrication. Here, the preparation of 50–100 nm thick polyamide flat membranes containing zeolitic imidazolate framework‐8 (ZIF‐8) nanoparticles is shown via interfacial polymerization, containing a lower amount of MOF (0.013 g m⁻² membrane) as compared to other membranes used for gas separation. The membranes are applied for H₂/CO₂ separation at high temperatures and pressures, showing a stable performance at 180 °C for at least seven days. Outstanding separation values are 328 GPU of H₂ and a H₂/CO₂ selectivity of 18.1 at 180 °C and 6 bar feed without transmembrane pressure. These membranes, also measurable without sweep gas, are highly suitable for industrial application.

中文翻译：

无需使用吹扫气体即可在高温下分离H2 / CO2的超渗透薄膜ZIF-8 /聚酰胺膜

含有金属有机骨架（MOF）的薄膜复合材料作为填料的用途引起了纳滤的广泛关注，因为它们的薄选择层可实现高渗透率。与其他聚合物膜相比，将这种膜用于气体分离应提供更好的渗透性，并减少其制造所需的MOF量。在此，通过界面聚合显示了制备50-100 nm厚的含有沸石咪唑酸酯骨架8（ZIF-8）纳米颗粒的聚酰胺平膜，与使用的其他膜相比，MOF含量较低（0.013 gm ^-2膜）用于气体分离。该膜适用于H ₂ / CO ₂在高温和高压下进行分离，显示出在180°C至少七天的稳定性能。出色的分离值为H _2的328 GPU和180°C和6 bar进料（无跨膜压力）下的H ₂ / CO ₂选择性为18.1。这些膜也可以在没有吹扫气的情况下进行测量，非常适合工业应用。

更新日期：2018-07-12

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