An improved preparation method for a CuO/CeO 2 -coated monolith for the CO-PrOx reaction.

Autor: Meißner J; Institute of Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich, Jülich, Germany. j.meissner@fz-juelich.de., Ahrens L; Central Facility for Electron Microscopy, RWTH Aachen University, Aachen, Germany., Pasel J; Institute of Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich, Jülich, Germany., Schwedt A; Central Facility for Electron Microscopy, RWTH Aachen University, Aachen, Germany., Wohlrab S; Leibniz Institute for Catalysis Rostock, Rostock, Germany., Mayer J; Central Facility for Electron Microscopy, RWTH Aachen University, Aachen, Germany., Peters R; Institute of Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich, Jülich, Germany.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Jun 08; Vol. 13 (1), pp. 9345. Date of Electronic Publication: 2023 Jun 08.
DOI: 10.1038/s41598-023-36423-7
Abstrakt: In this study, we present a method for directly coating monoliths with a CeO 2 /CuO catalyst using the urea-nitrate combustion method. The catalyst was characterized by means of XRD, SEM/EDX, and EPR measurements. Experimental results are described, when this catalyst was used for the preferential oxidation of CO. The catalytic activity for the CO-PrOx-reaction was measured by recording CO conversion as a function of the reaction temperature in a hydrogen-rich gas mixture in the presence and absence of water vapor. In a long-term test of over 310 h, the catalyst's long-term stability was demonstrated. Direct coating is shown to be a promising approach by which a larger amount of catalyst can be deposited onto the monolith in a single step than would be possible with washcoats.
(© 2023. The Author(s).)
Databáze: MEDLINE
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