We acknowledge financial support from NSF.
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Communication
Freeze Drying Significantly Increases Permanent Porosity and Hydrogen Uptake in 4,4-Connected Metal–Organic Frameworks†
Article first published online: 20 NOV 2009
DOI: 10.1002/anie.200904983
Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Issue
Angewandte Chemie International Edition
Volume 48, Issue 52, pages 9905–9908, December 21, 2009
Additional Information
How to Cite
Ma, L., Jin, A., Xie, Z. and Lin, W. (2009), Freeze Drying Significantly Increases Permanent Porosity and Hydrogen Uptake in 4,4-Connected Metal–Organic Frameworks. Angew. Chem. Int. Ed., 48: 9905–9908. doi: 10.1002/anie.200904983
- †
Publication History
- Issue published online: 15 DEC 2009
- Article first published online: 20 NOV 2009
- Manuscript Received: 5 SEP 2009
Funded by
- NSF
Keywords:
- freeze drying;
- gas storage;
- hydrogen storage;
- metal–organic frameworks;
- porous materials
Freeze the flood: After replacing high boiling-point solvents inside the channels of a metal–organic framework (MOF), benzene is frozen and then removed under vacuum by sublimation. Bypassing the liquid phase eliminates the detrimental effects of surface tension that induce mesopore collapse in MOFs, thereby enhancing their permanent porosity and hydrogen-uptake capacity (see scheme).