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Hysteretic adsorption and desorption of hydrogen by nanoporous metal-organic frameworks

Lookup NU author(s): Dr Xuebo Zhao, Bo Xiao, Dr Ashleigh Fletcher, Emeritus Professor Mark ThomasORCiD

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Abstract

Adsorption and desorption of hydrogen from nanoporous materials, such as activated carbon, is usually fully reversible. We have prepared nanoporous metal-organic framework materials with flexible linkers in which the pore openings, as characterized in the static structures, appear to be too small to allow H2 to pass. We observe hysteresis in their adsorption and desorption kinetics above the supercritical temperature of H2 that reflects the dynamical opening of the "windows" between pores. This behavior would allow H2 to be adsorbed at high pressures but stored at lower pressures.


Publication metadata

Author(s): Zhao X, Xiao B, Fletcher AJ, Thomas KM, Bradshaw D, Rosseinsky MJ

Publication type: Article

Publication status: Published

Journal: Science

Year: 2004

Volume: 306

Issue: 5698

Pages: 1012-1015

ISSN (print): 0036-8075

ISSN (electronic): 1095-9203

Publisher: American Association for the Advancement of Science

URL: http://dx.doi.org/10.1126/science.1101982

DOI: 10.1126/science.1101982


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