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2017
Journal Article
Titel

High-flux carbon molecular sieve membranes for gas separation

Abstract
Carbon membranes have great potential for highly selective and cost-efficient gas separation. Carbon is chemically stable and it is relative cheap. The controlled carbonization of a polymer coating on a porous ceramic support provides a 3D carbon material with molecular sieving permeation performance. The carbonization of the polymer blend gives turbostratic carbon domains of randomly stacked together sp2 hybridized carbon sheets as well as sp3 hybridized amorphous carbon. In the evaluation of the carbon molecular sieve membrane, hydrogen could be separated from propane with a selectivity of 10 000 with a hydrogen permeance of 5 m3(STP)/(m2hbar). Furthermore, by a post-synthesis oxidative treatment, the permeation fluxes are increased by widening the pores, and the molecular sieve carbon membrane is transformed from a molecular sieve carbon into a selective surface flow carbon membrane with adsorption controlled performance and becomes selective for carbon dioxide.
Author(s)
Richter, Hannes
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Voss, Hartwig
BASF SE, Ludwigshafen
Kaltenborn, Nadine
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Kämnitz, Susanne
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Wollbrink, Alexander
Leibniz Universität Hannover
Feldhoff, Armin
Leibniz Universität Hannover
Caro, Jürgen
Leibniz Universität Hannover
Roitsch, Stefan
Universität zu Köln
Voigt, Ingolf
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Zeitschrift
Angewandte Chemie. International edition
Thumbnail Image
DOI
10.1002/anie.201701851
Language
English
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Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Tags
  • carbon dioxide

  • carbon membranes

  • gas separation

  • molecular sieves

  • polymer carbonization...

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