The Eu³⁺-Based Luminescent Marker-A Powerful Tool for Fast Monitoring of Ce⁴⁺/Ce³⁺ Transitions in Ru/Ceria-Based Catalysts.

Authors

Oleksii Bezkrovnyi, Maja Szymczak, Piotr Kraszkiewicz, Damian Szymański, Leszek Kępiński, Małgorzata Małecka, Mirosława Pawlyta, Michael Vorochta, Iva Matolínová, Lukasz Marciniak

Published in

Chemphyschem : a European journal of chemical physics and physical chemistry. Volume 27. Issue 19. Pages e70580. Oct 14, 2026.

Abstract

The main aim of the study was to develop a new, relatively cheap and fast technique to monitor the chemical state of ceria in a Ru/CeO₂ catalyst under operating conditions. Our idea is based on the high sensitivity of the luminescence spectra of Eu³⁺ ions, doped into CeO₂, to the local environment of cationic centers. High sensitivity, together with the relatively low cost of this method, could be demanded in industrial conditions for fast monitoring of the Ce⁴⁺/Ce³⁺ ratio in ceria support. NAP-XPS and H₂-TPR were used as reference techniques to determine the actual chemical state of the Ru/ceria catalyst under working conditions, necessary to calibrate luminescent data.

PMID:
42844852
Bibliographic data and abstract were imported from PubMed on 08 Oct 2026.

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