Characterisation of metal organic frameworks for adsorption cooling

A. Rezk, R. Al-Dadah, S. Mahmoud, A. Elsayed

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Silica gel/water adsorption cooling systems suffer from size, performance and cost limitations. Therefore, there is a need for new adsorbent materials that outperform silica gel. Metal organic frameworks (MOFs) are new micro-porous materials that have extraordinary porosity and uniform structure. Due to the lack of published data that characterise MOF/water adsorption, this paper experimentally investigates the adsorption characteristics of HKUST-1 (Cu-BTC (copper benzene-1,3,5-tricarboxylate), C18H6Cu3O12) and MIL-100 (Fe-BTC (Iron 1,3,5-benzenetricarboxylate), C9H3FeO6) MOFs compared to silica gel RD-2060. The adsorption characteristics of Silica gel RD-2060, HKUST-1 and MIL-100 were determined using an advanced gravimetric dynamic vapour sorption analyser (DVS). Results showed that HKUST-1 performed better than silica gel RD-2060 with an increase of water uptake of 93.2%, which could lead to a considerable increase in refrigerant flow rate, cooling capacity and/or reducing the size of the adsorption system. However, MIL-100 MOF showed reduced water uptake comparable to silica gel RD-2060 for water chilling applications with evaporation at 5 ºC. These results highlight the potential of using MOF materials to improve the efficiency of water adsorption cooling systems.

Original languageEnglish
Pages (from-to)7366-7374
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Issue number25-26
Early online date25 Aug 2012
Publication statusPublished - 1 Dec 2012

Bibliographical note

Copyright 2012 Elsevier B.V., All rights reserved.


  • Adsorption cooling
  • Metal organic frameworks
  • Silica gel RD-2060/water
  • HKUST-1
  • MIL-100


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