期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 34, 期 5, 页码 452-459出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201200793
关键词
adsorption; diffusion; N-doped; carbonaceous membrane; CO2 separation
资金
- Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, US Department of Energy
- US Department of Energy's Office of Basic Energy Sciences, Division of Materials Sciences and Engineering
- 111 Project of China [B08021]
A porous, nitrogen-doped carbonaceous free-standing membrane (TFMT-550) is prepared by a facile template-free method using letrozole as an intermediate to a triazole-functionalized-triazine framework, followed by carbonization. Such adsorption/diffusion membranes exhibit good separation performance of CO2 over N2 and surpassing the most recent Robeson upper bound. An exceptional ideal CO2/N2 permselectivity of 47.5 was achieved with a good CO2 permeability of 2.40 x 1013 mol m m2 s1 Pa1. The latter results arise from the presence of micropores, narrow distribution of small mesopores and from the strong dipolequadrupole interactions between the large quadrupole moment of CO2 molecules and the polar sites associated with N groups (e.g., triazine units) within the framework.
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