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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

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

Zhao, X.B. and Xiao, B. and Fletcher, A.J. and Thomas, K.M. and Bradshaw, D. and Rosseinsky, M.J. (2004) Hysteretic adsorption and desorption of hydrogen by nanoporous metal-organic frameworks. Science, 306 (5698). pp. 1012-1015. ISSN 0036-8075

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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.