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- Title
Electrochemical Removal of NO<sub>x</sub> on Ceria-Based Catalyst-Electrodes.
- Authors
Xi Wang; Westermann, Alexandre; Yi Xiang Shi; Ning Sheng Cai; Rieu, Mathilde; Viricelle, Jean-Paul; Vernoux, Philippe
- Abstract
This study reports the electrochemical properties for NOx reduction of a ceria-based mixed ionic electronic conducting porous electrode promoted by Pt nanoparticles, as efficient catalyst for NO oxidation, and BaO, as sorbent to store NOx. This catalytic layer was deposited by screen-printing on a dense membrane of gadolinia-doped ceria, an O2- ionic conductor. The targeted Ba and Pt loadings were 150 and 5 5 μg/cm2, respectively. The NOx selective electrochemical reduction was performed between 400 °C and 500 °C with and without oxygen in the feed. Variations of the open-circuit voltage with time were found to be a good sensor of the NOx storage process on the ceria-based catalyst-electrode. However, no N2 production was observed in the presence of O2 phase in spite of nitrates formation.
- Subjects
NITROGEN oxides; ELECTROLYTIC reduction; FOSSIL fuels
- Publication
Catalysts (2073-4344), 2017, Vol 7, Issue 2, p61
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal7020061