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Title: Enhanced CO 2 Capture and Hydrogen Purification by Hydroxy Metal–Organic Framework/Polyimide Mixed Matrix Membranes

Abstract

Membrane separation technology provides substantial savings in energy and cost for molecular separations in chemical industry, ideally complementing conventional thermally driven separation approaches. However, current membranes are subject to limitations, primarily lying in the Robeson permeability-selectivity upper bound limits. In this study, hydroxy metal-organic framework (MOF)/polyimide mixed-matrix membranes are found to enable high separation performance for applications including CO 2 capture and hydrogen purification while offering enhanced compatibility with state-of-the-art membrane-manufacturing processes. The mixed-matrix membranes exceed the present Robeson upper bounds with H 2 and CO 2 permeabilities of 907 and 650 Barrers, respectively and H 2/CH 4 and CO 2/CH 4 selectivities of 45 and 32, respectively. The unparalleled performance results from intimate interactions at the boundary of the hydroxy MOFs and carboxylic polymers through strong hydrogen bonds. Finally, the principle of design opens the door to highly permeable membranes with synergistic compatibility with established membrane manufacturing platforms for energy-efficient molecular separations.

Authors:
 [1]; ORCiD logo [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1603534
Alternate Identifier(s):
OSTI ID: 1562330
Grant/Contract Number:  
AC02-05CH11231; IA0000018; AC02-05CH11231, IA0000018
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ChemSusChem
Additional Journal Information:
Journal Volume: 12; Journal Issue: 19; Journal ID: ISSN 1864-5631
Publisher:
ChemPubSoc Europe
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; carbon capture; hydrogen bonds; membranes; metal-organic frameworks; separations

Citation Formats

Ma, Canghai, and Urban, Jeffrey J. Enhanced CO2 Capture and Hydrogen Purification by Hydroxy Metal–Organic Framework/Polyimide Mixed Matrix Membranes. United States: N. p., 2019. Web. doi:10.1002/cssc.201902248.
Ma, Canghai, & Urban, Jeffrey J. Enhanced CO2 Capture and Hydrogen Purification by Hydroxy Metal–Organic Framework/Polyimide Mixed Matrix Membranes. United States. https://doi.org/10.1002/cssc.201902248
Ma, Canghai, and Urban, Jeffrey J. Tue . "Enhanced CO2 Capture and Hydrogen Purification by Hydroxy Metal–Organic Framework/Polyimide Mixed Matrix Membranes". United States. https://doi.org/10.1002/cssc.201902248. https://www.osti.gov/servlets/purl/1603534.
@article{osti_1603534,
title = {Enhanced CO2 Capture and Hydrogen Purification by Hydroxy Metal–Organic Framework/Polyimide Mixed Matrix Membranes},
author = {Ma, Canghai and Urban, Jeffrey J.},
abstractNote = {Membrane separation technology provides substantial savings in energy and cost for molecular separations in chemical industry, ideally complementing conventional thermally driven separation approaches. However, current membranes are subject to limitations, primarily lying in the Robeson permeability-selectivity upper bound limits. In this study, hydroxy metal-organic framework (MOF)/polyimide mixed-matrix membranes are found to enable high separation performance for applications including CO2 capture and hydrogen purification while offering enhanced compatibility with state-of-the-art membrane-manufacturing processes. The mixed-matrix membranes exceed the present Robeson upper bounds with H2 and CO2 permeabilities of 907 and 650 Barrers, respectively and H2/CH4 and CO2/CH4 selectivities of 45 and 32, respectively. The unparalleled performance results from intimate interactions at the boundary of the hydroxy MOFs and carboxylic polymers through strong hydrogen bonds. Finally, the principle of design opens the door to highly permeable membranes with synergistic compatibility with established membrane manufacturing platforms for energy-efficient molecular separations.},
doi = {10.1002/cssc.201902248},
url = {https://www.osti.gov/biblio/1603534}, journal = {ChemSusChem},
issn = {1864-5631},
number = 19,
volume = 12,
place = {United States},
year = {2019},
month = {8}
}

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Cited by: 2 works
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