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

Journal Article · · Advanced Functional Materials
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  1. Department of Chemical and Biological Engineering University at Buffalo The State University of New York Buffalo NY 14260 USA
  2. Department of Physics University at Buffalo The State University of New York Buffalo NY 14260 USA
  3. DigiM Solution LLC. Burlington MA 01803 USA
  4. Department of Chemistry University of California Berkeley CA 94720 USA, Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
  5. Department of Chemistry University of California Berkeley CA 94720 USA, Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA, Department of Materials Science and Engineering University of California Berkeley CA 94720 USA

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 H 2 sorption are dispersed in polybenzimidazole at loadings near the percolation threshold, which increases both H 2 permeability and H 2 /CO 2 selectivity. Performance of these MMMs surpasses the state‐of‐the‐art upper bound for H 2 /CO 2 separation with polymer‐based membranes. The success of these sorption‐enhanced MMMs for H 2 /CO 2 separation 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.

Sponsoring Organization:
USDOE
Grant/Contract Number:
FE0026463
OSTI ID:
1532424
Journal Information:
Advanced Functional Materials, Journal Name: Advanced Functional Materials Journal Issue: 36 Vol. 29; ISSN 1616-301X
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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