膜
化学工程
材料科学
气体分离
热稳定性
渗透
傅里叶变换红外光谱
热重分析
离子液体
多孔性
聚合物
分析化学(期刊)
高分子化学
化学
有机化学
复合材料
催化作用
工程类
生物化学
作者
Hongyong Zhao,Lizhong Feng,Xiaoli Ding,Yun Zhao,Xiaoyao Tan,Yuzhong Zhang
标识
DOI:10.1016/j.memsci.2018.07.075
摘要
Nitrogen-doped porous carbons (NDPC)/polymer of intrinsic microporosity (PIM) mixed-matrix membranes (MMMs) were fabricated via a thermal treatment of the ionic liquids (ILs)/PIM blending membranes, in which the nitrile-containing ILs reacted and formed the NDPC with three-dimensional-connected frame-works after the thermal post-treatment. The chemical characterization was performed by Fourier transform infrared spectroscopy. The thermal property was investigated by thermo-gravimetric analysis. The average inter-chain distance of the MMMs was evaluated by wide-angle X-ray diffraction. The porous structure was evaluated by low-temperature N2 adsorption-desorption analysis. The membrane morphology was investigated by field-emission scanning electron microscopy. The gas transport property of the NDPC/PIM MMMs was reported. The relationship between gas transport property and physical properties was also discussed. Compared with the original PIM-1 membrane, the NDPC/PIM MMMs displayed much higher CO2 permeability at the cost of an acceptable, slight reduction in CO2/N2 selectivity. The outstanding permeation-separation performance for CO2/N2 exceeds the Robeson upper bound line.
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