Engineering silica membranes for separation performance, hydrothermal stability, and production scalability

Advanced Membranes Pub Date : 2023-01-01 DOI:10.1016/j.advmem.2023.100064

Vinh Bui, Ameya Manoj Tandel, Varun Reddy Satti, Elizabeth Haddad, Haiqing Lin

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引用次数: 4

Abstract

Silica membranes have been successfully practiced for solvent dehydration and emerged as an exciting platform for gas separations (such as H₂/CO₂) due to their unique porous structures for molecular sieving, tunable chemistries, and excellent thermal and chemical stability. This review aims to provide a comprehensive update on the advancement of silica membranes for gas and liquid separations in the last decade. First, we summarize various techniques to fabricate membranes (particularly those at low temperatures) and describe the effect of processing parameters on the membrane structures. Second, penetrant transport mechanisms and molecular dynamic simulations are presented to elucidate the structure-properties relationship. Third, we highlight state-of-the-art silica membranes with promising separation properties for gases, vapors, and liquids and various engineering strategies to improve hydrothermal stability, production scalability, and separation performance. Finally, we provide perspectives on the future development of these membranes for practical applications.

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用于分离性能、水热稳定性和生产可扩展性的工程二氧化硅膜

二氧化硅膜已成功用于溶剂脱水，并因其独特的分子筛多孔结构、可调的化学性质以及优异的热稳定性和化学稳定性而成为气体分离（如H2/CO2）的令人兴奋的平台。这篇综述旨在全面介绍过去十年中用于气体和液体分离的二氧化硅膜的进展。首先，我们总结了制造膜的各种技术（特别是低温下的技术），并描述了工艺参数对膜结构的影响。其次，介绍了渗透剂的传输机制和分子动力学模拟，以阐明结构与性能的关系。第三，我们重点介绍了最先进的二氧化硅膜，它对气体、蒸汽和液体具有良好的分离性能，并采用了各种工程策略来提高水热稳定性、生产可扩展性和分离性能。最后，我们对这些膜在实际应用中的未来发展提供了展望。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Membranes

CiteScore

8.50

自引率

0.00%

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