Print Email Facebook Twitter High-Silica CHA Zeolite Membrane with Ultra-High Selectivity and Irradiation Stability for Krypton/Xenon Separation Title High-Silica CHA Zeolite Membrane with Ultra-High Selectivity and Irradiation Stability for Krypton/Xenon Separation Author Wang, Xuerui (Nanjing Tech University) Zhou, Tao (Nanjing Tech University) Zhang, Ping (Nanjing Tech University) Yan, Wenfu (Jilin University) Li, Yongguo (China Institute for Radiation, Taiyuan) Peng, Li (Nanjing Tech University) Veerman, Dylan (Student TU Delft) Shi, Mengyang (Nanjing Tech University) Gu, Xuehong (Nanjing Tech University) Kapteijn, F. (TU Delft ChemE/Catalysis Engineering) Date 2021 Abstract Capture and storage of the long-lived 85Kr is an efficient approach to mitigate the emission of volatile radionuclides from the spent nuclear fuel reprocessing facilities. However, it is challenging to separate krypton (Kr) from xenon (Xe) because of the chemical inertness and similar physical properties. Herein we prepared high-silica CHA zeolite membranes with ultra-high selectivity and irradiation stability for Kr/Xe separation. The suitable aperture size and rigid framework endures the membrane a strong size-exclusion effect. The ultrahigh selectivity of 51–152 together with the Kr permeance of 0.7–1.3×10−8 mol m−2 s−1 Pa−1 of high-silica CHA zeolite membranes far surpass the state-of-the-art polymeric membranes. The membrane is among the most stable polycrystalline membranes for separation of humid Kr/Xe mixtures. Together with the excellent irradiation stability, high-silica CHA zeolite membranes pave the way to separate radioactive Kr from Xe for a notable reduction of the volatile nuclear waste storage volume. Subject CHA zeolitegas separationkryptonmembranexenon To reference this document use: http://resolver.tudelft.nl/uuid:e6a8c4b3-c5a5-4ff4-bb8b-6870c9528608 DOI https://doi.org/10.1002/anie.202100172 ISSN 1433-7851 Source Angewandte Chemie (International Edition), 60 (16), 9032-9037 Part of collection Institutional Repository Document type journal article Rights © 2021 Xuerui Wang, Tao Zhou, Ping Zhang, Wenfu Yan, Yongguo Li, Li Peng, Dylan Veerman, Mengyang Shi, Xuehong Gu, F. Kapteijn Files PDF anie.202100172.pdf 1.93 MB Close viewer /islandora/object/uuid:e6a8c4b3-c5a5-4ff4-bb8b-6870c9528608/datastream/OBJ/view