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  • Sorption‐Enhanced Mixed Matrix Membranes with Facilitated Hydrogen Transport for Hydrogen Purification and CO 2 Capture
Title: Sorption‐Enhanced Mixed Matrix Membranes with Facilitated Hydrogen Transport for Hydrogen Purification and CO 2 Capture
Abstract

Mixed matrix membranes (MMMs) comprising size‐sieving fillers dispersed in polymers exhibit diffusivity selectivity and may surpass the upper bound for gas separation, but their performance is limited by defects at the polymer/filler interface. Herein, a fundamentally different approach employing a highly sorptive filler that is inherently less sensitive to interfacial defects is reported. Palladium nanoparticles with extremely high H2sorption are dispersed in polybenzimidazole at loadings near the percolation threshold, which increases both H2permeability and H2/CO2selectivity. Performance of these MMMs surpasses the state‐of‐the‐art upper bound for H2/CO2separation with polymer‐based membranes. The success of these sorption‐enhanced MMMs for H2/CO2separation may launch a new research paradigm that taps the enormous knowledge of affinities between gases and nanomaterials to design MMMs for a wide variety of gas separations.

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NSF-PAR ID:
10461322
Author(s) / Creator(s):
 ;  ;  ;  ;  ;  ;  ;  ;  ;  
Publisher / Repository:
Wiley Blackwell (John Wiley & Sons)
Date Published:
Journal Name:
Advanced Functional Materials
Volume:
29
Issue:
36
ISSN:
1616-301X
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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