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MOF Scaffold for a High‐Performance Mixed‐Matrix Membrane
Author(s) -
Xie Ke,
Fu Qiang,
Webley Paul A.,
Qiao Greg G.
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201804162
Subject(s) - membrane , barrer , selectivity , ethylene glycol , permeability (electromagnetism) , scaffold , peg ratio , chemical engineering , matrix (chemical analysis) , materials science , chemistry , chromatography , organic chemistry , biomedical engineering , engineering , catalysis , biochemistry , finance , economics
A novel composite membrane consisting of an interconnected MOF scaffold coated with cross‐linked poly(ethylene glycol) (PEG) has been developed. As a result of its unique structure, the membrane shows an exceptional 18‐fold permeability enhancement as compared to pristine PEG membranes, without compromising the selectivity. This performance is unattainable with current mixed‐matrix membranes (MMMs). Our optimized membrane has a permeability of 2700 Barrer with a CO 2 /N 2 selectivity of 35, which surpasses the latest Robeson upper bound.