Construction and Characterization of MOF-Nanosheet Based Mixed Matrix Membranes with Two-Dimensional Nano-Confined Molecular Transport Pathways

H2/CO2分离是化石燃料制氢和捕集CO2的关键技术之一。本项目旨在从金属有机框架（MOF）纳米片和超薄聚合物纳米膜中开发具有二维纳米限制分子传输途径的改变范式的h2选择膜。这包括MOF纳米片、超薄聚合物纳米膜和膜的制备，并通过扫描和透射电子显微镜技术对其微观和超微结构进行全面表征。在综合气化联合循环（IGCC）模拟条件下，对所研制的混合基质膜进行了H2/CO2分离性能的实验评价。通过研究轻气体在混合基质膜中纳米通道的输运机理和膜的结构-性能关系，将对MOF纳米片和聚合物网络对气体分子输运的协同作用有一个基本的认识。

H2/CO2 separation is one of the key technologies in H2 production and CO2 capture from fossil fuels. This project is aiming at the developing paradigm-changing H2-selective membranes with two-dimensional nano-confined molecular transport pathways from metal organic framework (MOF) nanosheets and ultrathin polymeric nanofilms. This involves the preparation of MOF nanosheets, ultrathin polymeric nanofilms, and membranes accompanied by thorough characterization of its micro- and ultrastructure characterization by scanning and transmission electron microscope techniques. The performance of the developed mixed matrix membranes for H2/CO2 separation are evaluated experimentally under simulated conditions of an integrated gasification combined cycle (IGCC). By studying the transport mechanism of light gases through the nano-confined pathways in the mixed matrix membranes and investigation of the structure-performance relationship of the membranes, fundamental understanding about the synergistic effect between MOF nanosheets and polymer networks on the transport of gas molecules will be gained.