In situ formation of LDH membranes of different microstructures with molecular sieve gas selectivity

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dc.identifier.uri Liu, Yi Wang, Nanyi Caro, Jürgen 2015-11-19T12:59:59Z 2015-11-19T12:59:59Z 2014-02-05
dc.identifier.citation Liu, Yi; Wang, Nanyi; Caro, Juergen: In situ formation of LDH membranes of different microstructures with molecular sieve gas selectivity. In: Journal of Materials Chemistry A 2 (2014), Nr. 16, S. 5716-5723. DOI:
dc.description.abstract Research on interlayer gallery-based gas and liquid separation has gained widespread attention. A series of layered materials like lamellar ZSM-5, graphene and its derivatives have been fabricated into membranes showing fascinating gas/liquid separation properties. Layered double hydroxides (LDHs) are prominent representatives of layered compounds composed of regularly arranged brucite-like 2D sheets. Here we successfully prepared well-intergrown NiAl-CO3 LDH membranes in one step. Particularly it was found that CO2 dissolved in the precursor solution exerted great influence on the microstructure of prepared membranes. Trace amounts of CO2 in the precursor solution led to the formation of ab-oriented 0.6 mu m thick LDH membranes, while randomly oriented 5 mu m thick LDH membranes formed from CO2-saturated precursor solutions. Both ab-& randomly oriented LDH membranes showed clear size-based selectivity and H-2 was found to preferentially permeate through the interlayer galleries. However, randomly oriented LDH membranes showed a much higher H-2 selectivity possibly due to the decreased density of mesoscopic defects. Furthermore, in addition to the NiAl-CO3 LDH membrane, a compact and randomly oriented ZnAl-NO3 LDH membrane with reasonable gas selectivity was successfully prepared here by proper optimization of the synthesis conditions. eng
dc.description.sponsorship EC/FP7/263007
dc.description.sponsorship Alexander von Humboldt Foundation
dc.description.sponsorship FP7-NMP-2010-LARGE-4, no. 263007
dc.language.iso eng eng
dc.publisher Cambridge : Royal Society of Chemistry
dc.relation info:eu-repo/grantAgreement/EC/FP7/263007
dc.relation.ispartofseries Journal of Materials Chemistry A 2 (2014), Nr. 16
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
dc.subject Layered Double Hydroxides eng
dc.subject Metal-Organic Framework eng
dc.subject Hydrotalcite-Like Compounds eng
dc.subject Graphene Oxide Membranes eng
dc.subject Pore-Plugging Synthesis eng
dc.subject Mfi-Alumina Membranes eng
dc.subject Zeolite Membranes eng
dc.subject Thin-Films eng
dc.subject Separation Membranes eng
dc.subject Hydrogen Separation eng
dc.subject.ddc 540 | Chemie ger
dc.subject.ddc 530 | Physik ger
dc.title In situ formation of LDH membranes of different microstructures with molecular sieve gas selectivity eng
dc.type article
dc.type Text
dc.relation.essn 2050-7496
dc.relation.issn 2050-7488
dc.bibliographicCitation.issue 16
dc.bibliographicCitation.volume 2
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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