Polymer nanosieve membranes for CO2-capture applications

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DOIResolve DOI: http://doi.org/10.1038/NMAT2989
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Journal titleNature Materials
Pages372375; # of pages: 4
Subjectmicroporous organic polymers; MOPs; gas storage; gas separation; low-dielectric applications; polymer nanosieve membranes; nanosieve membranes; carbon capture; carbon storage; CO2-capture; CO2-separation
AbstractMicroporous organic polymers (MOPs) are of potential technological significance for gas storage1–3, gas separation4 and low-dielectric applications5. Among many approaches for obtaining such materials, solution-processable MOPs derived from rigid and contorted macromolecular structures are promising because of their excellent mass transport and mass exchange capability. Here we show a class of amorphous MOP, prepared by T2 C 3U cycloaddition modification of a polymer containing an aromatic nitrile group with an azide compound, showing super-permeable characteristics and outstanding CO2 separation performance, even under polymer plasticization conditions such as CO2=light gas mixtures. This unprecedented result arises from the introduction of tetrazole groups into highly microporous polymeric frameworks, leading to more favourable CO2 sorption with superior affinity in gas mixtures, and selective CO2 transport by presorbed CO2 molecules that limit access by other light gas molecules. This strategy provides a direction in the design of MOP membrane materials for economic CO2 capture processes.
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AffiliationNational Research Council Canada; NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number52847
NPARC number17819663
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Record identifier91f7ada6-9420-4018-89ac-5a83ca4f905b
Record created2011-04-29
Record modified2016-05-09
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