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Thermally driven refrigeration by methanol adsorption on coatings of HKUST-1 and MIL-101(Cr)

: Kummer, H.; Baumgartner, M.; Hügenell, P.; Fröhlich, D.; Henninger, S.; Gläser, R.


Applied thermal engineering 117 (2017), S.689-697
ISSN: 1359-4311
Fraunhofer ISE ()
Thermische Anlagen und Gebäudetechnik; adsorptive coating; Gebäudeenergietechnik; Materialien und Komponenten für Wärmetransformation

A new and versatile binder-based metal organic framework-(MOF-) coating enables efficient use in fast-cycle adsorption chillers for cooling and refrigeration applications. Two different adsorbents were presented, HKUST-1 and Mil-101(Cr), with promising methanol adsorption characteristics and high loading capacities up to 1.22 g g−1. Polysiloxane-based coatings containing 65 and 80 wt% of the MOF adsorbents were produced and the adsorption characteristics were studied before and after extensive thermal treatment over 1000 cycles between 20 °C and 130 °C under methanol atmosphere by thermogravimetric analysis and X-ray diffractometry. Using the Dubinin-Astakhov approach, possible methanol loading lifts in a refrigeration process under different application conditions were quantified.