Document Type
Article
Abstract
Passive SCR systems, which employ both a three-way catalyst and SCR catalyst, are effective for the reduction of nitrogen oxide (NOx) emissions from lean burn gasoline engines. However, questions remain regarding the effect of three-way catalyst formulations on their performance in these systems. Here, Pd/CeOx/Al2O3 catalysts with variable CeOx loading were synthesized, characterized, and evaluated to determine the effects of CeOx on catalyst performance. While a small amount of ceria was beneficial for promoting essential reactions, excess ceria was detrimental due to the increase in oxygen storage capacity. Additionally, insights into potential reaction pathways for NH3 production were determined.
Digital Object Identifier (DOI)
Publication Info
Catalysis Communications, Volume 156, 2021, pages 106308-.
Rights
© 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.
APA Citation
Thomas, C., Pihl, J., Prikhodko, V., Kidder, M., Lauterbach, J., & Toops, T. (2021). The effects of ceria loading on three-way catalysts for passive SCR operation. Catalysis Communications, 156, 106308. https://doi.org/10.1016/j.catcom.2021.106308