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Scalable Polymeric Few-Nanometer Organosilica Membranes for Pre-Combustion CO 2 Capture

30 Pages Posted: 2 Feb 2021 Publication Status: Review Complete

See all articles by Lingxiang Zhu

Lingxiang Zhu

State University of New York at Buffalo - Department of Chemical and Biological Engineering

Liang Huang

State University of New York at Buffalo - Department of Chemical and Biological Engineering

Surendar R. Venna

U.S. Department of Energy - National Energy Technology Laboratory

Adrienne Blevins

University of Colorado at Boulder - Membrane Science, Engineering and Technology (MAST) Center

Yifu Ding

University of Colorado at Boulder - Membrane Science, Engineering and Technology (MAST) Center

David Hopkinson

U.S. Department of Energy - National Energy Technology Laboratory

Mark T. Swihart

State University of New York at Buffalo - Department of Chemical and Biological Engineering

Haiqing Lin

State University of New York at Buffalo - Department of Chemical and Biological Engineering

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Abstract

Nanoporous silica membranes exhibit excellent H2/CO2 separation properties for sustainable H2 production and CO2 capture but are prepared via complicated thermal processes above 400 oC, which prevent their scalable production at low cost. Here, we demonstrate the rapid fabrication (within 6 minutes) of ultrathin silica membranes (≈6 nm) via oxygen plasma treatment of polydimethylsiloxane based thin-film composite membranes at 20 oC. The resulting organosilica membranes exhibit H2 permeance of 280 - 930 GPU (1 GPU = 3.347×10-10 mol m-2 s-1 Pa-1) and H2/CO2 selectivity of 93 - 32 at 200 °C, far surpassing state-of-the-art membranes and Robeson’s upper bound for H2/CO2 separation. When challenged with a 3-day simulated syngas test containing water vapor and a 340-day stability test at 200 °C, the membrane shows stable separation performance. The robust H2/CO2 separation properties coupled with excellent scalability demonstrate the great potential of these organosilica membranes for economic H2 production with minimal carbon emissions.

Keywords: CO2 capture, hydrogen purification, membrane separation, silica membranes

Suggested Citation

Zhu, Lingxiang and Huang, Liang and Venna, Surendar R. and Blevins, Adrienne and Ding, Yifu and Hopkinson, David and Swihart, Mark T. and Lin, Haiqing, Scalable Polymeric Few-Nanometer Organosilica Membranes for Pre-Combustion CO 2 Capture. Available at SSRN: https://ssrn.com/abstract=3778364 or http://dx.doi.org/10.2139/ssrn.3778364
This version of the paper has not been formally peer reviewed.

Lingxiang Zhu

State University of New York at Buffalo - Department of Chemical and Biological Engineering ( email )

Buffalo, NY
United States

Liang Huang

State University of New York at Buffalo - Department of Chemical and Biological Engineering ( email )

Buffalo, NY
United States

Surendar R. Venna

U.S. Department of Energy - National Energy Technology Laboratory ( email )

Pittsburgh, PA
United States

Adrienne Blevins

University of Colorado at Boulder - Membrane Science, Engineering and Technology (MAST) Center ( email )

1070 Edinboro Drive
Boulder, CO 80309
United States

Yifu Ding

University of Colorado at Boulder - Membrane Science, Engineering and Technology (MAST) Center ( email )

1070 Edinboro Drive
Boulder, CO 80309
United States

David Hopkinson

U.S. Department of Energy - National Energy Technology Laboratory

3610 Collins Ferry Rd
Morgantown, WV 26507
United States

Mark T. Swihart

State University of New York at Buffalo - Department of Chemical and Biological Engineering ( email )

Buffalo, NY
United States

Haiqing Lin (Contact Author)

State University of New York at Buffalo - Department of Chemical and Biological Engineering ( email )

Buffalo, NY
United States

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