Anticoking Effect of Eu<sup>3+</sup> Doping of the Ru/Ceria Catalyst in the MSR Reaction for Hydrogen Generation

The positive effect of Eu<sup>3+</sup> doping on the stability of the Ru/ceria catalyst during the methane steam reforming (MSR) reaction, which was used for H<sub>2</sub> production, was observed. The effect is attributed to a significant inhibition of coking-induced deactivation of the catalyst by Eu doping, which we explain by three hypotheses. The first one is an increase in basicity with Eu doping, which inhibits carbon deposition on the working catalyst during the MSR reaction. The second one is that Eu addition introduces strain into the ceria lattice, which could facilitate oxygen diffusion and, as a consequence, prevents catalyst's coking. The third one is related to the presence of an additional high-temperature pathway for supplying lattice oxygen based on Eu<sup>3+</sup> → Eu<sup>2+</sup> reduction on the surface of the Eu-doped ceria support.

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Publication Details

Journal
The Journal of Physical Chemistry C
Published
2025-10-03
DOI
https://doi.org/10.1021/acs.jpcc.5c05324
Primary Topic
Catalytic Processes in Materials Science
Type
article
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article

Anticoking Effect of Eu3+ Doping of the Ru/Ceria Catalyst in the MSR Reaction for Hydrogen Generation

Núria J. Divins, Isabel Serrano, Mirosława Pawlyta, Oleksii S. Bezkrovnyi et al.
The Journal of Physical Chemistry C
Catalytic Processes in Materials Science
article

Anticoking Effect of Eu3+ Doping of the Ru/Ceria Catalyst in the MSR Reaction for Hydrogen Generation

Núria J. Divins, Isabel Serrano, Mirosława Pawlyta, Oleksii S. Bezkrovnyi, Leszek Kępiński, Jordi Llorca, Xènia Garcia, Piotr Kraszkiewicz, Maciej Ptak
article en

Abstract

The positive effect of Eu<sup>3+</sup> doping on the stability of the Ru/ceria catalyst during the methane steam reforming (MSR) reaction, which was used for H<sub>2</sub> production, was observed. The effect is attributed to a significant inhibition of coking-induced deactivation of the catalyst by Eu doping, which we explain by three hypotheses. The first one is an increase in basicity with Eu doping, which inhibits carbon deposition on the working catalyst during the MSR reaction. The second one is that Eu addition introduces strain into the ceria lattice, which could facilitate oxygen diffusion and, as a consequence, prevents catalyst's coking. The third one is related to the presence of an additional high-temperature pathway for supplying lattice oxygen based on Eu<sup>3+</sup> → Eu<sup>2+</sup> reduction on the surface of the Eu-doped ceria support.

The Journal of Physical Chemistry CVol. 129(41)
Silesian University of Technology (PL), University of St Andrews (GB), Energy Technologies Institute (GB), Division of Materials Research (US), Peac Institute of Multiscale Sciences (CN), Włodzimierz Trzebiatowski Institute of Low Temperature and Structure Research (PL), Universitat Politècnica de Catalunya (ES), Polish Academy of Sciences (PL)
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Catalytic Processes in Materials Science
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Anticoking Effect of Eu<sup>3+</sup> Doping of the Ru/Ceria Catalyst in the MSR Reaction for Hydrogen Generation — Núria J. Divins, Isabel Serrano, et al. · The Journal of Physical Chemistry C (2025) | TGRS Research Map | TGRS