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Inorg Chem. 2008 Sep 15;47(18):7936-8. doi: 10.1021/ic800700h. Epub 2008 Jun 13.

Alkali metal cation effects on hydrogen uptake and binding in metal-organic frameworks.

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  • 1Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA.

Abstract

A 2-fold interwoven metal-organic framework has been chemically reduced and doped with Li(+), Na(+), and K(+). At low pressures and temperatures, the reduced and doped materials exhibit enhanced H2 uptakeup to 65% higher than for the neutral framework. Notably, at similar doping levels, H2 binding is strongest with Li(+) and decreases as Li(+) > Na(+) > K(+). However, the uptake increases in the opposite order. We attribute the behavior to structural changes accompanying framework reduction.

PMID:
18549202
[PubMed]
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