State Key Laboratory of Chemical Engineering and Department of Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China.
Macromol Rapid Commun. 2013 Mar 12;34(5):452-9. doi: 10.1002/marc.201200793.
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.
一种多孔氮掺杂碳质无支撑膜（TFMT-550）通过简便的无模板方法制备，以来曲唑为中间体，形成三唑功能化的三嗪骨架，然后碳化。这种吸附/扩散膜对 CO2 与 N2 的分离性能良好，超过了最近的 Robeson 上限。在具有良好的 CO2 渗透性 2.40×10^(-13)mol m m^(-2)s^(-1)Pa^(-1)的情况下，实现了异常理想的 CO2/N2 选择渗透性 47.5。后者的结果源于微孔的存在，小中孔的窄分布以及 CO2 分子的大偶极矩与与框架内 N 基团（例如三嗪单元）相关的极性位之间的强偶极-四极相互作用。
