N. Du, H. B. Park, G. P. Robertson, M. M. Dal-Cin, T. Visser,
L. Scoles, M. D. Guiver*
Nature Mater., 2011, 10, 372-375 DOI: 10.1038/NMAT2989
Notes & Highlights:
Abstract:
Microporous 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.
Direct link for the Supporting Information pdf file (FREE access)
Nature Mater., 2011, 10, 372-375 DOI: 10.1038/NMAT2989
Notes & Highlights:- TZPIM-1 is one of the few membranes that broke the Robeson plot for CO2/N2 selectivity.
- Guiver also proved calculations from single gas isotherms show lesser selectivity than actual mixed gas measurements.
Abstract:
Microporous 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.
Direct link for the Supporting Information pdf file (FREE access)
No comments:
Post a Comment
Please refrain from abusive and unfair remarks. Constructive comments are especially welcome. We reserve the right to reject or delete your comment without your consent.