Hysteretic Adsorption and Desorption of Hydrogen by Nanoporous Metal-Organic Frameworks

Author:

Zhao Xuebo12,Xiao Bo12,Fletcher Ashleigh J.12,Thomas K. Mark12,Bradshaw Darren12,Rosseinsky Matthew J.12

Affiliation:

1. Northern Carbon Research Laboratories, School of Natural Sciences, Bedson Building, University of Newcastle upon Tyne, Newcastle upon Tyne, NE1 7RU, UK.

2. Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, UK.

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 H 2 to pass. We observe hysteresis in their adsorption and desorption kinetics above the supercritical temperature of H 2 that reflects the dynamical opening of the “windows” between pores. This behavior would allow H 2 to be adsorbed at high pressures but stored at lower pressures.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference24 articles.

1. “Grand challenge for basic and applied research on hydrogen storage: statement of objectives ” available at www.eere.energy.gov/hydrogenandfuelcells/docs/gc_h2_storage.doc.

2. G. Gundiah, A. Govindaraj, N. Rajalakshmi, K. S. Dhathathreyan, C. N. R. Rao, J. Mater. Sci.85, 209 (2003).

3. Compensation Effect for the Kinetics of Adsorption/Desorption of Gases/Vapors on Microporous Carbon Materials

4. Adsorption Kinetics and Size Exclusion Properties of Probe Molecules for the Selective Porosity in a Carbon Molecular Sieve Used for Air Separation

5. Hydrogen Sorption in Functionalized Metal−Organic Frameworks

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