Issue 40, 2012
From the journal:

Journal of Materials Chemistry

Microcalorimetric insight into the analysis of the reactive adsorption of ammonia on Cu-MOF and its composite with graphite oxide†

Camille Petit,‡a   Sabine Wrabetzb  and  Teresa J. Bandosz*a  

* Corresponding authors

a The Department of Chemistry, The City College of New York and the Graduate School of the City University of New York, 160 Convent Avenue, New York, USA
E-mail: tbandosz@ccny.cuny.edu
Fax: +1 212-650-6107
Tel: +1 212-650-6017

b Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany

Abstract

The determination of reactive adsorption mechanisms on metal–organic frameworks remains largely unexplored and knowledge in that field would provide an important stepping stone in enhancing the performance of these materials for gas separation. In this study, the mechanisms of ammonia adsorption on HKUST-1 and its composite with graphite oxide (GO) were analyzed using microcalorimetry, and the results were compared to those derived from other characterization tools. The key to this study lies in conducting measurements at very low surface coverage in order to define the most energetic adsorption phenomena. It was found that ammonia reacted with the Cu sites and then with the ligands causing MOF to collapse. On the other hand, GO enhanced the heats of adsorption owing to its additional reactive sites.

Graphical abstract: Microcalorimetric insight into the analysis of the reactive adsorption of ammonia on Cu-MOF and its composite with graphite oxide

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Article information

DOI
https://doi.org/10.1039/C2JM34973F
Article type
Paper
Submitted
26 Jul 2012
Accepted
28 Aug 2012
First published
13 Sep 2012

J. Mater. Chem., 2012,22, 21443-21447

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Microcalorimetric insight into the analysis of the reactive adsorption of ammonia on Cu-MOF and its composite with graphite oxide

C. Petit, S. Wrabetz and T. J. Bandosz, J. Mater. Chem., 2012, 22, 21443 DOI: 10.1039/C2JM34973F

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