Comparison of Flat and Hollow‐Fiber Mixed‐Matrix Composite Membranes for CO2 Separation with Temperature

Zeolite A/poly (1‐trimethylsilyl‐1‐propyne) (zeoliteA/PTMSP) and [emim][Ac]/chitosan (IL/CS) are mixed‐matrix membrane (MMM) materials with enhanced CO2/N2 permselectivity even at higher temperature. The scalability to asymmetric flat and hollow‐fiber geometry by a simple dip‐coating method was anal...

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Bibliographic Details
Published in:Chemical engineering & technology 2017-05, Vol.40 (5), p.997-1007
Main Authors: Fernández-Barquín, Ana, Casado-Coterillo, Clara, Etxeberria-Benavides, Miren, Zuñiga, Jon, Irabien, Angel
Format: Article
Language:English
Subjects:
Asymmetry
Carbon dioxide
Chitosan
CO2 capture
Dip coatings
High permeance
Immersion coating
Materials selection
Membranes
Mixed‐matrix composite membranes
Permeation
Post‐combustion capture
Selectivity
Separation
Temperature
Thickness
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Summary:Zeolite A/poly (1‐trimethylsilyl‐1‐propyne) (zeoliteA/PTMSP) and [emim][Ac]/chitosan (IL/CS) are mixed‐matrix membrane (MMM) materials with enhanced CO2/N2 permselectivity even at higher temperature. The scalability to asymmetric flat and hollow‐fiber geometry by a simple dip‐coating method was analyzed. The CO2/N2 separation performance was evaluated at different temperatures. The resulting composite membranes exhibit a significantly enhanced CO2 permeation flux because the MMM layer thickness is reduced by 97 % from flat to hollow‐fiber geometries in IL‐CS composite membranes, while the selectivity is maintained similar to the self‐standing membranes, thus proving that compatibility between the membrane component materials leads to a defect‐free composite membrane, regardless the geometry and temperature. The change of geometry of CO2‐permselective and thermally resistant mixed‐matrix membrane self‐standing materials as coating layers on flat and hollow‐fiber polymer‐compatible supports is evaluated. Reduction of selective layer thickness and influence of temperature to keep the high permselectivity and thermal stability in advanced membrane configurations are considered.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.201600580