articleJournal of the American Chemical SocietyJan 7, 2006Closed access

Effects of Functionalization, Catenation, and Variation of the Metal Oxide and Organic Linking Units on the Low-Pressure Hydrogen Adsorption Properties of Metal−Organic Frameworks

JLJesse L. C. RowsellOMOmar M. Yaghi

University of Michigan–Ann Arbor

PubMed
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Abstract

The dihydrogen adsorption isotherms of eight metal-organic frameworks (MOFs), measured at 77 K up to a pressure of 1 atm, have been examined for correlations with their structural features. All materials display approximately Type I isotherms with no hysteresis, and saturation was not reached for any of the materials under these conditions. Among the six isoreticular MOFs (IRMOFs) studied, the catenated materials exhibit the largest capacities on a molar basis, up to 9.8 H(2) per formula unit. The addition of functional groups (-Br, -NH(2), -C(2)H(4)-) to the phenylene links of IRMOF-1 (MOF-5), or their replacement with thieno[3,2-b]thiophene moieties in IRMOF-20, altered the adsorption behavior by a minor…

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Topics & keywords

Topics
Keywords
  • Chemistry
  • Adsorption
  • Metal-organic framework
  • Catenation
  • Metal
  • Oxide
  • Inorganic chemistry
  • Hydrogen bond
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