Functional Materials Design, Discovery & Development Research Group (FMD3), Advanced Membranes & Porous Materials Center (AMPMC), Division of Physical Sciences and Engineering (PSE), 4700 King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Kingdom of Saudi Arabia.
J Am Chem Soc. 2015 Feb 11;137(5):1754-7. doi: 10.1021/ja511495j. Epub 2015 Jan 28.
We report the fabrication of the first continuous zeolite-like metal-organic framework (ZMOF) thin-film membrane. A pure phase sod-ZMOF, sodalite topology, membrane was grown and supported on a porous alumina substrate using a solvothermal crystallization method. The absence of pinhole defects in the film was confirmed and supported by the occurrence of quantifiable time-lags, for all studied gases, during constant volume/variable pressure permeation tests. For both pure and mixed gas feeds, the sod-ZMOF-1 membrane exhibits favorable permeation selectivity toward carbon dioxide over relevant industrial gases such as H2, N2, and CH4, and it is mainly governed by favorable CO2 adsorption.
我们报告了首例连续沸石型金属有机骨架（ZMOF）薄膜的制备。采用溶剂热结晶法，在多孔氧化铝基底上生长并支撑了纯相 sod-ZMOF（方钠石拓扑结构）薄膜。在恒容/变压渗透测试中，所有研究气体均出现了可量化的时间滞后，这证实并支持了该薄膜不存在微孔缺陷。对于纯气体和混合气体进料，sod-ZMOF-1 膜对二氧化碳表现出有利的渗透选择性，优于相关工业气体，如 H2、N2 和 CH4，这主要是由于 CO2 吸附有利。
