title: Synthesis of porous, nitrogen-doped adsorption/diffusion carbonaceous membranes for efficient CO2 separation.
abstract: 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 × 10(-13) mol m m(-2) s(-1) Pa(-1) . The latter results arise from the presence of micropores, narrow distribution of small mesopores and from the strong dipole-quadrupole interactions between the large quadrupole moment of CO2 molecules and the polar sites associated with N groups (e.g., triazine units) within the framework.
authors: State Key Laboratory of Chemical Engineering and Department of Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China.
authors: Xiang
authors: X
authors: Zhu
authors: Songhai
authors: S
authors: Chai
authors: Chengcheng
authors: C
authors: Tian
authors: Pasquale F
authors: PF
authors: Fulvio
authors: Kee Sung
authors: KS
authors: Han
authors: Edward W
authors: EW
authors: Hagaman
authors: Gabriel M
authors: GM
authors: Veith
authors: Shannon M
authors: SM
authors: Mahurin
authors: Suree
authors: S
authors: Brown
authors: Honglai
authors: H
authors: Liu
authors: Sheng
authors: S
authors: Dai