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Microporous Polyamide Membranes for Molecular Sieving of Nitrogen from Volatile Organic Compounds |
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| Authors: | Assoc?Prof Haoli Zhou Fei Tao Quan Liu Chunxin Zong Wenchao Yang Assoc?Prof Xingzhong Cao Prof Wanqin Jin Prof Nanping Xu |
| Institution: | 1. State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergistic Innovation Center for Advanced Materials, College of Chemical Engineering, Nanjing Tech University, 5 Xinmofan Road, Nanjing, 210009 P.R. China;2. State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergistic Innovation Center for Advanced Materials, College of Chemical Engineering, Nanjing Tech University, 5 Xinmofan Road, Nanjing, 210009 P.R. China
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China |
| Abstract: | Microporous polymer membranes continue to receive tremendous attention for energy-efficient gas separation processes owing to their high separation performances. A new network microporous polyamide membrane with good molecular-sieving performance for the separation of N2 from a volatile organic compound (VOC) mixture is described. Triple-substituted triptycene was used as the main monomer to form a fisherman's net-shaped polymer, which readily forms a composite membrane by solution casting. This membrane exhibited outstanding separation performance and good stability for the molecular-sieving separation of N2 over VOCs such as cyclohexane. The rejection rate of the membrane reached 99.2 % with 2098 Barrer N2 permeability at 24 °C under 4 kPa. This approach promotes development of microporous membranes for separation of condensable gases. |
| Keywords: | Flüchtige organische Verbindungen Gastrennung Mikroporöse Membranen Polyamide Triptycen |