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The potential of PCPs/MOFs for the use in adsorption heat pump processes.

Author(s) : HENNINGER S. K., JEREMIAS F., EHRENMANN J., et al.

Summary

Porous coordination polymers (PCPs) or metal-organic frameworks (MOFs) are a new emerging class of microporous materials possessing unique features such as huge surface areas, large pore volumes and a tunable composition. PCPs are inorganic-organic hybrid materials based on metal clusters linked by organic ligands forming a 3-dimensional coordinated network. PCP or MOFs are related to zeolites with their porosity and reversible guest adsorption properties. Similar to zeolites, the Si or Al atom is schematically replaced by a metal atom or metal cluster, the O atom by a bridging organic ligand. Compared to traditional adsorbents used in heat pump applications like zeolites or aluminophosphates, PCPs/MOFs exhibit a much richer variety in terms of composition, pore structure and topology. The underlying cluster/linker concept allows the tuning of pore structures and chemical functionality over a wide range. In this work, an overview of the current developments and possibilities of PCPs for the use in adsorption heat pumps is given. Different very promising candidates have been identified and synthesized. The surface area and pore size as well as the water adsorption characteristics have been measured showing an impressive water loading capacity with up to 1 g/g. In addition, first investigations on the hydrothermal stability for one candidate have been performed with very promising results showing only a slight degradation of approximately 3% compared to the initial load after 40 cycles. In summary, the potential of the new family of PCPs or MOFs for the use in adsorption heat pumps is tremendous.

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Pages: 415-424

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Details

  • Original title: The potential of PCPs/MOFs for the use in adsorption heat pump processes.
  • Record ID : 30001229
  • Languages: English
  • Source: Sources/sinks Alternative to the Outside Air for Heat Pump and Air-conditioning Techniques (Alternative Sources - AS), Padua, Italy, April 5-7, 2011. / International Sorption Heat Pump Conference (ISHPC11), Padua, Italy, April 6-8, 2011.
  • Publication date: 2011/04/06

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