Journal
RSC ADVANCES
Volume 4, Issue 105, Pages 61051-61055Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra09394a
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Funding
- National Natural Science Foundation of China [21304055]
- Research Fund for the Doctoral Program of Higher Education of China [20120202120007]
- Science and Technology Program of Shaanxi Province [2013KJXX-72]
- Shaanxi Innovative Team of Key Science and Technology [2013KCT-17]
- Fundamental Research Funds for the Central Universities [GK201103001, GK201101003, GK201301002]
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Two hypercrosslinked microporous organic polymer networks from carbazole derivatives have been synthesized via Friedel-Crafts alkylation using a formaldehyde dimethyl acetal crosslinker promoted by anhydrous FeCl3. Both of the polymer networks are stable in various solvents and thermally stable. The polymer network FCTCz produced from a dendritic carbazole building block shows much higher Brunauer-Emmet-Teller specific surface area of 1845 m(2) g(-1) than the dicarbazolic polymer network of FCBCz (1067 m(2) g(-1)). FCTCz exhibits a high carbon dioxide uptake ability of 4.63 mmol g(-1) at 1.13 bar and 273 K with a hydrogen uptake ability of 1.94 wt% (1.13 bar/77 K). In addition, both of the polymer networks exhibit good ideal CO2/N-2 selectivity (26-29) and CO2/CH4 selectivity (5.2-5.8) at 273 K. These results demonstrated that this kind of polymer network is a very promising candidate for potential applications in post-combustion carbon dioxide capture and sequestration technology.
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