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Carbon molecular sieve membranes for hydrogen purification and pervaporation

Article published in the Journal of “Materials Chemistry A” by P. H. Tchoua Ngamou, M. E. Ivanova, O. Guillon and W. A. Meulenberg

Journal of Materials Chemistry A, Patrick Tchoua Ngamou (IEK-1)Copyright: Forschungszentrum Jülich GmbH

Ultrathin (~ 200 nm) and defect-free carbon molecular sieve membranes (CMS) have been successfully applied to the inner surface of porous supports. This was achieved by pyrolysis of a plastic precursor at 700 ° C. The synthesized CMS membranes showed an unprecedentedly high H2 permeance and ideal separation factors for H2/CO2, H2/N2 and H2/CH4, respectively at 200 °C.

In addition, it has been possible to obtain excellent separation factors for the pervaporation of aqueous binary mixtures of methanol and ethanol.

These results unambiguously show that the carbon membranes developed at IEK-1 possess the potential for high-temperature hydrogen purification and dewatering of organic solvents. More information can be found at: