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Title: High-performance porous carbon-zeolite mixed-matrix membranes for CO₂/N₂ separation
Authors: Chuah, Chong Yang
Lee, Junghyun
Bao, Yueping
Song, Juha
Bae, Tae-Hyun
Keywords: Engineering::Chemical engineering
Issue Date: 2021
Source: Chuah, C. Y., Lee, J., Bao, Y., Song, J. & Bae, T. (2021). High-performance porous carbon-zeolite mixed-matrix membranes for CO₂/N₂ separation. Journal of Membrane Science, 622, 119031-.
Journal: Journal of Membrane Science
Abstract: Nano-sized PS-MFI, ETS-10 and SAPO-34 zeolites were utilized as CO2-selective fillers to fabricate high-performance mixed-matrix carbon molecular sieve membranes (CMSMs) for application in the CO2/N2 separation process. In this work, an in-house polyimide, ODPA-TMPDA, was used as a polymer precursor for CMSMs, due to its higher intrinsic gas permeability compared with commercial polyimides. Zeolite-filled CMSMs were then successfully fabricated without any appreciable defects at the filler/matrix interfaces. Gas permeation testing revealed that both CO2 permeability and CO2/N2 selectivity can be significantly improved upon incorporation of such zeolite fillers, enabling selective adsorption and transport of CO2. In particular, SAPO-34 yielded the best results among the zeolite fillers tested, resulting in an excellent performance far beyond the Robeson upper bound limit for CO2/N2 separation.
ISSN: 0376-7388
DOI: 10.1016/j.memsci.2020.119031
Schools: School of Chemical and Biomedical Engineering 
Research Centres: Nanyang Environment and Water Research Institute 
Singapore Membrane Technology Centre 
Environmental Chemistry and Materials Centre
Rights: © 2021 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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