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

X.B. Zhao, B. Xiao, A.J. Fletcher, K.M. Thomas, D. Bradshaw, M.J. Rosseinsky

Research output: Contribution to journalArticle

1105 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)1012-1015
Number of pages3
JournalScience
Volume306
Issue number5698
DOIs
Publication statusPublished - Nov 2004

Keywords

  • hysteretic adsorption
  • adsorption
  • desorption
  • hydrogen
  • nanoporous metal-organic frameworks
  • chemical engineering

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