Zeolite-like metal-organic frameworks (ZMOFs) as hydrogen storage platform: Lithium and magnesium ion-exchange and H-(rho-ZMOF) interaction studies

Farid Nouar, Jurgen Eckert, Jarrod F. Eubank, Paul Forster, Mohamed Eddaoudi

Research output: Contribution to journalArticle

409 Scopus citations

Abstract

Zeollta- like metal-organic frameworks (ZMOFs) are anionic, have readily exchangeable extraframework cations, and can be constructed with a variety of organic linkers. ZMOFs therefore can be regarded as an excellent platform for systematic studies of the effect(s) of various structural factors on H2 binding/Interaction with porous metal-organic materials. We find that the enhanced binding of molecular hydrogen In Ion-exchanged ZMOFs with an anionic framework Is largely governed by the presence of the electrostatic field In the cavity, which Is reflected by lsosteric heats of adsorption In these compounds which are greater by as much as 50% relative to those In neutral MOFs. Direct contact of the sorbed hydrogen with the exchangeable cations Is shown not to be possible In the explored systems thus far, as they retain their form as aqua complexes.

Original languageEnglish
Pages (from-to)2864-2870
Number of pages7
JournalJournal of the American Chemical Society
Volume131
Issue number8
DOIs
StatePublished - Mar 4 2009

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