Full Paper

Hydrogen Adsorption in Metal–Organic Frameworks: Cu-MOFs and Zn-MOFs Compared†

  1. B. Panella1,
  2. M. Hirscher1,
  3. H. Pütter2,
  4. U. Müller2

Article first published online: 19 JAN 2006

DOI: 10.1002/adfm.200500561

Issue

Advanced Functional Materials

Advanced Functional Materials

Volume 16, Issue 4, pages 520–524, March, 2006

Additional Information

How to Cite

Panella, B., Hirscher, M., Pütter, H. and Müller, U. (2006), Hydrogen Adsorption in Metal–Organic Frameworks: Cu-MOFs and Zn-MOFs Compared. Advanced Functional Materials, 16: 520–524. doi: 10.1002/adfm.200500561

Author Information

  1. 1

    Max-Planck-Institut für Metallforschung, Heisenbergstr. 3, D-70569 Stuttgart, Germany

  2. 2

    Chemicals Research and Engineering, BASF Aktiengesellschaft, D-67056 Ludwigshafen, Germany

  1. †

    We are very thankful to Annette Fuchs for the N2-adsorption measurements and to Ewald Bischoff for the SEM pictures.

Publication History

  1. Issue published online: 22 FEB 2006
  2. Article first published online: 19 JAN 2006
  3. Manuscript Accepted: 6 OCT 2005
  4. Manuscript Received: 22 AUG 2005

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

Get PDF (410K)

Keywords:

  • Hydrogen storage;
  • Metal—organic frameworks;
  • Microporous materials

Graphical Abstract

Thumbnail image of graphical abstract

Physisorption of hydrogen in microporous materials with high specific surface area (SSA) is a promising route to achieve high hydrogen-storage capacities. The hydrogen uptake of two metal–organic framework (MOF) structures based on Zn (MOF-5) and Cu (Cu-BTC) metal ions are examined. The saturation values at 77 K are 5.1 and 3.6 wt.-%, respectively, and proportional to the SSA. At low pressures, however, Cu-BTC shows a higher hydrogen uptake than MOF-5.

Abstract

Hydrogen adsorption in two different metal–organic frameworks (MOFs), MOF-5 and Cu-BTC (BTC: benzene-1,3,5-tricarboxylate), with Zn2+ and Cu2+ as central metal ions, respectively, is investigated at temperatures ranging from 77 K to room temperature. The process responsible for hydrogen storage in these MOFs is pure physical adsorption with a heat of adsorption of approximately –4 kJ mol–1. With a saturation value of 5.1 wt.-% for the hydrogen uptake at high pressures and 77 K, MOF-5 shows the highest storage capacity ever reported for crystalline microporous materials. However, at low pressures Cu-BTC shows a higher hydrogen uptake than MOF-5, making Cu-based MOFs more promising candidates for potential storage materials. Furthermore, the hydrogen uptake is correlated with the specific surface area for crystalline microporous materials, as shown for MOFs and zeolites.

Get PDF (410K)