Measuring water adsorption processes of metal-organic frameworks for heat pump applications via optical calorimetry
Woellner M, Klein N, Kaskel S (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 278
Pages Range: 206-211
DOI: 10.1016/j.micromeso.2018.11.024
Abstract
Optical calorimetry (broadband IR-detection of the released heat of adsorption, “InfraSORP”) during water adsorption processes is used for an accelerated assessment of porous materials performance in heat pump applications. Metal-organic frameworks (MOFs) are screened as a highly promising class of materials for water adsorption driven heat exchangers with high water adsorption capacities. Based on a proper calibration, optical calorimetry is demonstrated to allow for rapid estimation of the total water adsorption capacity at a given relative humidity. In a dynamic mode, full water adsorption isotherms can be measured using a step-wise increase of the relative humidity. As cycling stability is among the most critical issues for the integration of new porous materials into systems, the InfraSORP methodology provides a valuable and inexpensive tool for accelerated cycling and stability testing. The InfraSORP technique is demonstrated to provide a significantly accelerated automated and easy-to-acquire alternative as compared to conventional characterization methods.
Involved external institutions
Germany (DE)How to cite
APA:
Woellner, M., Klein, N., & Kaskel, S. (2019). Measuring water adsorption processes of metal-organic frameworks for heat pump applications via optical calorimetry. Microporous and Mesoporous Materials, 278, 206-211. https://doi.org/10.1016/j.micromeso.2018.11.024
MLA:
Woellner, Michelle, Nicole Klein, and Stefan Kaskel. "Measuring water adsorption processes of metal-organic frameworks for heat pump applications via optical calorimetry." Microporous and Mesoporous Materials 278 (2019): 206-211.
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