Sunder Naveen, Fong Yeong Yin, Bustam Mohamad Azmi, Suhaimi Nadia Hartini
Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia.
CO2 Research Center (CO2RES), R&D Building, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia.
Polymers (Basel). 2022 Mar 30;14(7):1408. doi: 10.3390/polym14071408.
CO separation from raw natural gas can be achieved through the use of the promising membrane-based technology. Polymeric membranes are a known method for separating CO but suffer from trade-offs between its permeability and selectivity. Therefore, through the use of mixed matrix membranes (MMMs) which utilizes inorganic or hybrid fillers such as metal-organic frameworks (MOFs) in polymeric matrix, the permeability and selectivity trade-off can be overcome and possibly surpass the Robeson Upper Bounds. In this study, various types of MOFs are explored in terms of its structure and properties such as thermal and chemical stability. Next, the use of amine and non-amine functionalized MOFs in MMMs development are compared in order to investigate the effects of amine functionalization on the membrane gas separation performance for flat sheet and hollow fiber configurations as reported in the literature. Moreover, the gas transport properties and various challenges faced by hollow fiber mixed matrix membranes (HFMMMs) are discussed. In addition, the utilization of amine functionalization MOF for mitigating the challenges faced is included. Finally, the future directions of amine-functionalized MOF HFMMMs are discussed for the fields of CO separation.
从原料天然气中分离一氧化碳可以通过使用有前景的基于膜的技术来实现。聚合物膜是一种已知的分离一氧化碳的方法，但在其渗透性和选择性之间存在权衡。因此，通过使用混合基质膜（MMM），即在聚合物基质中使用无机或混合填料（如金属有机框架（MOF）），可以克服渗透性和选择性之间的权衡，甚至有可能超越罗布森上限。在本研究中，从其结构和性质（如热稳定性和化学稳定性）方面探索了各种类型的MOF。接下来，比较了胺功能化和非胺功能化MOF在MMM开发中的应用，以研究胺功能化对平板和中空纤维构型膜气体分离性能的影响，如文献报道。此外，还讨论了中空纤维混合基质膜（HFMMM）的气体传输特性和面临的各种挑战。此外，还包括利用胺功能化MOF来缓解所面临的挑战。最后，讨论了胺功能化MOF HFMMM在一氧化碳分离领域的未来发展方向。
