用于高性能氦分离的柔性 ZSM-5 沸石膜

IF 16.1 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Angewandte Chemie International Edition Pub Date : 2024-11-20 DOI:10.1002/anie.202421285

Yongyan Deng, Fuxin Qiu, Jiaxing Wu, Jialu Li, Ziyi Li, Qinglin Huang, Guangshan Zhu, Xiaoqin Zou

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引用次数: 0

摘要

柔性沸石膜有望用于氦等临界气体的可扩展和适应性分离；然而，合成此类膜仍是一项重大挑战。在本研究中，我们采用种子生长法在聚四氟乙烯（PTFE）支撑物上成功制备了无裂纹 ZSM-5 沸石膜。聚四氟乙烯支撑膜显示出前所未有的氦渗透率，超过 6.7×10-7 mol m-2 s-1 Pa-1，氦/N2 和氦/CH4 分离系数分别高达 17 和 83，超过了目前最先进的膜。这些柔性膜即使在弯曲和拉伸后仍能保持出色的分离性能。此外，大型膜还展示了从多组分气体混合物中稳定分离氦气的能力，显示了它们在从天然气中提取氦气方面的巨大实用潜力。

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Flexible ZSM‐5 Zeolite Membrane for High‐Performance Helium Separation

Flexible zeolite membranes are promising for scalable and adaptable separation of critical gases such as helium; however, the synthesis of such membranes remains a significant challenge. In this study, we report the successful fabrication of crack‐free ZSM‐5 zeolite membranes on polytetrafluoroethylene (PTFE) supports using a seeded growth method. PTFE‐supported membranes exhibit unprecedented helium permeance of over 6.7×10‐7 mol m‐2 s‐1 Pa‐1 and high He/N2 and He/CH4 separation factors of 17 and 83 respectively, surpassing current state‐of‐the‐art membranes. These flexible membranes maintain excellent separation performance even after bending and stretching. Furthermore, large‐scale membranes demonstrate stable helium separation from multicomponent gas mixtures, showcasing their significant potential for practical helium extraction from natural gas.

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来源期刊

Angewandte Chemie International Edition 化学-化学综合

CiteScore

26.60

自引率

6.60%

发文量

3549

审稿时长

1.5 months

期刊介绍： Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.