High-Silica CHA Zeolite Membrane with Ultra-High Selectivity and Irradiation Stability for Krypton/Xenon Separation.
High-Silica CHA Zeolite Membrane with Ultra-High Selectivity and Irradiation Stability for Krypton/Xenon Separation.
复制标题
用于氪/氙分离的超高选择性和辐照稳定性的高硅CHA沸石膜
DOI:
10.1002/anie.202100172
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发表时间:
2021-04-12
期刊:
影响因子:
--
通讯作者:
Kapteijn F
中科院分区:
文献类型:
--
作者:
Wang X;Zhou T;Zhang P;Yan W;Li Y;Peng L;Veerman D;Shi M;Gu X;Kapteijn F
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. High‐silica CHA zeolite membranes show ultra‐high Kr/Xe selectivity and superior hydrothermal stability. Together with their irradiation stability, high‐silica CHA zeolite membranes can pave the way to enrich radioactive 85Kr from xenon for a notable decrease in the volatile nuclear waste volume.
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影响因子:
9.5
作者:
Kwon, Yeon Hye;Min, Byunghyun;Nair, Sankar
通讯作者:
Nair, Sankar
影响因子:
15
作者:
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DOI:
10.1007/s10967-010-0691-5
发表时间:
2011-01-01
影响因子:
1.6
作者:
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通讯作者:
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影响因子:
9.5
作者:
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通讯作者:
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