A perfluorinated covalent triazine-based framework for highly selective and water-tolerant CO2 capture

Handle URI:
http://hdl.handle.net/10754/562549
Title:
A perfluorinated covalent triazine-based framework for highly selective and water-tolerant CO2 capture
Authors:
Zhao, Yunfeng; Yao, Kexin; Teng, Baiyang; Zhang, Tong; Han, Yu ( 0000-0003-1462-1118 )
Abstract:
We designed and synthesized a perfluorinated covalent triazine-based framework (FCTF-1) for selective CO2 capture. The incorporation of fluorine (F) groups played multiple roles in improving the framework's CO 2 adsorption and separation capabilities. Thermodynamically, the strongly polar C-F bonds promoted CO2 adsorption via electrostatic interactions, especially at low pressures. FCTF-1's CO2 uptake was 1.76 mmol g-1 at 273 K and 0.1 bar through equilibrium adsorption, exceeding the CO2 adsorption capacity of any reported porous organic polymers to date. In addition, incorporating F groups produced a significant amount of ultra-micropores (<0.5 nm), which offered not only high gas adsorption potential but also kinetic selectivity for CO2-N 2 separation. In mixed-gas breakthrough experiments, FCTF-1 exhibited an exceptional CO2-N2 selectivity of 77 under kinetic flow conditions, much higher than the selectivity (31) predicted from single-gas equilibrium adsorption data. Moreover, FCTF-1 proved to be tolerant to water and its CO2 capture performance remained excellent when there was moisture in the gas mixture, due to the hydrophobic nature of the C-F bonds. In addition, the moderate adsorbate-adsorbent interaction allowed it to be fully regenerated by pressure swing adsorption processes. These attributes make FCTF-1 a promising sorbent for CO2 capture from flue gas. © 2013 The Royal Society of Chemistry.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Nanostructured Functional Materials (NFM) laboratory
Publisher:
Royal Society of Chemistry
Journal:
Energy and Environmental Science
Issue Date:
2013
DOI:
10.1039/c3ee42548g
Type:
Article
ISSN:
17545692
Sponsors:
This research was supported by baseline research funds and competitive research grants to Yu Han from King Abdullah University of Science and Technology.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Chemical Science Program

Full metadata record

DC FieldValue Language
dc.contributor.authorZhao, Yunfengen
dc.contributor.authorYao, Kexinen
dc.contributor.authorTeng, Baiyangen
dc.contributor.authorZhang, Tongen
dc.contributor.authorHan, Yuen
dc.date.accessioned2015-08-03T10:42:16Zen
dc.date.available2015-08-03T10:42:16Zen
dc.date.issued2013en
dc.identifier.issn17545692en
dc.identifier.doi10.1039/c3ee42548gen
dc.identifier.urihttp://hdl.handle.net/10754/562549en
dc.description.abstractWe designed and synthesized a perfluorinated covalent triazine-based framework (FCTF-1) for selective CO2 capture. The incorporation of fluorine (F) groups played multiple roles in improving the framework's CO 2 adsorption and separation capabilities. Thermodynamically, the strongly polar C-F bonds promoted CO2 adsorption via electrostatic interactions, especially at low pressures. FCTF-1's CO2 uptake was 1.76 mmol g-1 at 273 K and 0.1 bar through equilibrium adsorption, exceeding the CO2 adsorption capacity of any reported porous organic polymers to date. In addition, incorporating F groups produced a significant amount of ultra-micropores (<0.5 nm), which offered not only high gas adsorption potential but also kinetic selectivity for CO2-N 2 separation. In mixed-gas breakthrough experiments, FCTF-1 exhibited an exceptional CO2-N2 selectivity of 77 under kinetic flow conditions, much higher than the selectivity (31) predicted from single-gas equilibrium adsorption data. Moreover, FCTF-1 proved to be tolerant to water and its CO2 capture performance remained excellent when there was moisture in the gas mixture, due to the hydrophobic nature of the C-F bonds. In addition, the moderate adsorbate-adsorbent interaction allowed it to be fully regenerated by pressure swing adsorption processes. These attributes make FCTF-1 a promising sorbent for CO2 capture from flue gas. © 2013 The Royal Society of Chemistry.en
dc.description.sponsorshipThis research was supported by baseline research funds and competitive research grants to Yu Han from King Abdullah University of Science and Technology.en
dc.publisherRoyal Society of Chemistryen
dc.titleA perfluorinated covalent triazine-based framework for highly selective and water-tolerant CO2 captureen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentNanostructured Functional Materials (NFM) laboratoryen
dc.identifier.journalEnergy and Environmental Scienceen
dc.contributor.institutionSchool of Energy, Soochow University, Suzhou, Jiangsu 215006, Chinaen
kaust.authorZhao, Yunfengen
kaust.authorYao, Kexinen
kaust.authorTeng, Baiyangen
kaust.authorHan, Yuen
kaust.authorZhang, Tongen
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