Carbon Molecular Sieve Membranes Comprising Graphene Oxides and Porous Carbon for CO2/N-2 Separation

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To improve the CO2/N-2 separation performance, mixed-matrix carbon molecular sieve membranes (mixed-matrix CMSMs) were fabricated and tested. Two carbon-based fillers, graphene oxide (GO) and activated carbon (YP-50F), were separately incorporated into two polymer precursors (Matrimid(R) 5218 and ODPA-TMPDA), and the resulting CMSMs demonstrated improved CO2 permeability. The improvement afforded by YP-50F was more substantial due to its higher accessible surface area. Based on the gas permeation data and the Robeson plot for CO2/N-2 separation, the performances of the CMSMs containing 15 wt % YP-50F and 15 wt % GO in the mixed polymer matrix surpassed the 2008 Robeson upper bound of polymeric membranes. Hence, this study demonstrates the feasibility of such membranes in improving the CO2/N-2 separation performance through the appropriate choice of carbon-based filler materials in polymer matrices.
Publisher
MDPI
Issue Date
2021-04
Language
English
Article Type
Article
Citation

MEMBRANES, v.11, no.4, pp.284

ISSN
2077-0375
DOI
10.3390/membranes11040284
URI
http://hdl.handle.net/10203/285343
Appears in Collection
CBE-Journal Papers(저널논문)
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