Work

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

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide The positive effect of Eu 3+ doping on the stability of the Ru/ceria catalyst during the methane steam reforming (MSR) reaction, which was used for H 2 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 3+ → Eu 2+ reduction on the surface of the Eu-doped ceria support.

Source: The Journal of Physical Chemistry C

DOI: 10.1021/acs.jpcc.5c05324