Jeremias, FelixFelixJeremiasLozan, V.V.LozanHenninger, Stefan K.Stefan K.HenningerJaniak, ChristophChristophJaniak2022-03-042022-03-042013https://publica.fraunhofer.de/handle/publica/23429910.1039/c3dt51471dSorption-based heat transformation and storage appliances are very promising for utilizing solar heat and waste heat in cooling or heating applications. The economic and ecological efficiency of sorption-based heat transformation depends on the availability of suitable hydrophilic and hydrothermally stable sorption materials. We investigated the feasibility of using the metal-organic frameworks UiO-66(Zr), UiO-67(Zr), H2N-UiO-66(Zr) and H2N-MIL-125(Ti) as sorption materials in heat transformations by means of volumetric water adsorption measurements, determination of the heat of adsorption and a 40-cycle ad/desorption stress test. The amino-modified compounds H2N-UiO-66 and H2N-MIL-125 feature high heat of adsorption (89.5 and 56.0 kJ mol&#8722;1, respectively) and a very promising H2O adsorption isotherm due to their enhanced hydrophilicity. For H2N-MIL-125 the very steep rise of the H2O adsorption isotherm in the 0.1 < p/p0 < 0.2 region is especially beneficial for the intended heat pump application.enThermische Anlagen und GebäudetechnikEnergieeffiziente GebäudeSpeichertechnologienEnergieeffiziente Gebäude und GebäudetechnikElektrische und thermische WärmepumpenKühlung und Klimatisierung von GebäudenSpeicher für die Niedertemperatur-SolarthermieEnergieeffiziente und solare Kühlungframeworkpumpstabilitysorption540journal article