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Dual-Layer MOF Composite Membranes with Rationally Tuned Interface Interaction for Post-Combustion CO 2 Separation

30 Pages Posted: 8 Nov 2019 Sneak Peek Status: Review Complete

See all articles by Sameh Elsaidi

Sameh Elsaidi

National Energy Technology Laboratory

Surendar Venna

National Energy Technology Laboratory

Mona H. Mohamed

Alexandria University - Department of Chemistry

Michael Gipple

National Energy Technology Laboratory

David Hopkinson

National Energy Technology Laboratory

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Abstract

A novel concept for the fabrication of dual-layer metal organic framework (MOF) membranes is presented herein that show great promise in improving permeability and selectivity performance for CO2/N2 separation as compared with the individual constituent MOF materials. A highly selective thin MOF layer with narrow pore size was grown on the surface of a highly permeable MOF layer with large pore size. Most importantly, chemical binding at the interface between the two MOF layers made it possible to achieve continuous, defect-free membranes. The two dual-layer MOF@MOF membranes: SIFISIX-3-Ni@SIFISIX-1-Cu and SIFISIX-3-Ni@HKUST-1, represent the first examples of pure inorganic membranes constructed from dual-layer MOF composites. The CO2/N2 selectivities of the HKUST-1 and SIFSIX-1-Cu membranes were improved from 5.2 to 13.0 and 3.4 to 7.8, respectively, after the growth of a selective layer of SIFSIX-3-Ni onto the surface of those materials.

Keywords: Metal-organic frameworks, Materials Design, Composite Membranes, Dual-layer Membranes, Multilayer Membranes, Membrane Fabrication, Interface Interaction, Core-shell Particles, Gas Separation, Carbon Capture

Suggested Citation

Elsaidi, Sameh and Venna, Surendar and Mohamed, Mona H. and Gipple, Michael and Hopkinson, David, Dual-Layer MOF Composite Membranes with Rationally Tuned Interface Interaction for Post-Combustion CO 2 Separation (November 7, 2019). CHEMJOURNAL-D-19-01146. Available at SSRN: https://ssrn.com/abstract=3482153 or http://dx.doi.org/10.2139/ssrn.3482153
This is a paper under consideration at Cell Press and has not been peer-reviewed.

Sameh Elsaidi (Contact Author)

National Energy Technology Laboratory ( email )

3610 Collins Ferry Rd
Morgantown, WV 26507
United States

Surendar Venna

National Energy Technology Laboratory

3610 Collins Ferry Rd
Morgantown, WV 26507
United States

Mona H. Mohamed

Alexandria University - Department of Chemistry

Egypt

Michael Gipple

National Energy Technology Laboratory

3610 Collins Ferry Rd
Morgantown, WV 26507
United States

David Hopkinson

National Energy Technology Laboratory

3610 Collins Ferry Rd
Morgantown, WV 26507
United States

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