期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 26, 页码 8768-8772出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201904385
关键词
electrochemistry; membranes; molecular sieves; polymers; synthetic methods
资金
- National Natural Science Foundation of China [21490570, 21674012, 21625102, 21471018]
- Beijing Municipal Science and Technology Project [Z181100004418001]
- Beijing Institute of Technology Research Fund Program
Membrane technologies that do not rely on heat for industrial gas separation would lower global energy cost. While polymeric, inorganic, and mixed-matrix separation membranes have been rapidly developed, the bottleneck is balancing the processability, selectivity, and permeability. Reported here is a softness adjustment of rigid networks (SARs) strategy to produce flexible, stand-alone, and molecular-sieving membranes by electropolymerization. Here, 14 membranes were rationally designed and synthesized and their gas separation ability and mechanical performance were studied. The separation performance of the membranes for H-2/CO2, H-2/N-2, and H-2/CH4 can exceed the Robeson upper bound, among which, H-2/CO2 separation selectivity reaches 50 with 626 Barrer of H-2 permeability. The long-term and chemical stability tests demonstrate their potential for industrial applications. This simple, scalable, and cost-effective strategy holds promise for the design other polymers for key energy-intensive separations.
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