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A novel plasma-assisted hollow fiber membrane concept for efficiently separating oxygen from CO in a CO2 plasma

Chen, Guoxing and Buck, Frederic and Kistner, Irina and Widenmeyer, Marc and Schiestel, Thomas and Schulz, Andreas and Walker, Matthias and Weidenkaff, Anke (2020):
A novel plasma-assisted hollow fiber membrane concept for efficiently separating oxygen from CO in a CO2 plasma.
In: Chemical Engineering Journal, 392, p. 123699. Elsevier, ISSN 13858947,
DOI: 10.1016/j.cej.2019.123699,
[Article]

Abstract

Plasma-based technologies providing extremely flexible ‘turnkey’ applications are increasingly attracting interest in renewable energy usage and CO2 conversion into carbon neutral fuels. Here, we report a breakthrough concept combining plasma and mixed ionic-electronic conductor hollow fiber membranes for significantly enhancing the oxygen permeability which may stimulate the CO2 conversion by product separation. Structure and composition of La0.6Ca0.4Co0.5Fe0.5O3−δ (LCCF) hollow fiber membranes were characterized before and after oxygen permeation tests in a CO2 plasma. The oxygen permeation flux can be increased by one order of magnitude via this new plasma-assisted hollow fiber membrane concept, reaching up to 4 ml min−1 cm−2 in a CO2 containing atmosphere. Long-term operation did not lead to an apparent decrease of the oxygen permeation flux even with fast heating and cooling cycles by switching the plasma repeatedly on and off. Thus, we consider this plasma-assisted hollow fiber membrane concept a promising process for flexible and economical CO2 conversion.

Item Type: Article
Erschienen: 2020
Creators: Chen, Guoxing and Buck, Frederic and Kistner, Irina and Widenmeyer, Marc and Schiestel, Thomas and Schulz, Andreas and Walker, Matthias and Weidenkaff, Anke
Title: A novel plasma-assisted hollow fiber membrane concept for efficiently separating oxygen from CO in a CO2 plasma
Language: English
Abstract:

Plasma-based technologies providing extremely flexible ‘turnkey’ applications are increasingly attracting interest in renewable energy usage and CO2 conversion into carbon neutral fuels. Here, we report a breakthrough concept combining plasma and mixed ionic-electronic conductor hollow fiber membranes for significantly enhancing the oxygen permeability which may stimulate the CO2 conversion by product separation. Structure and composition of La0.6Ca0.4Co0.5Fe0.5O3−δ (LCCF) hollow fiber membranes were characterized before and after oxygen permeation tests in a CO2 plasma. The oxygen permeation flux can be increased by one order of magnitude via this new plasma-assisted hollow fiber membrane concept, reaching up to 4 ml min−1 cm−2 in a CO2 containing atmosphere. Long-term operation did not lead to an apparent decrease of the oxygen permeation flux even with fast heating and cooling cycles by switching the plasma repeatedly on and off. Thus, we consider this plasma-assisted hollow fiber membrane concept a promising process for flexible and economical CO2 conversion.

Journal or Publication Title: Chemical Engineering Journal
Journal volume: 392
Publisher: Elsevier
Uncontrolled Keywords: Plasma, Hollow fiber membrane, Oxygen permeation, Perovskite, CO2 resistance
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Materials and Resources
Date Deposited: 20 May 2020 07:12
DOI: 10.1016/j.cej.2019.123699
Official URL: https://doi.org/10.1016/j.cej.2019.123699
Projects: This work is part of the project "Plasma-induced CO2-conversion" (PiCK, project number: 03SFK2S3A, 03SFK2S3B, 03SFK2S3C) and financially supported by the German Federal Ministry of Education and Research in "Kopernikus-Projekte fur die Energiewende".
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