Parametric Study on Ru/CeO<sub>2</sub> Ammonia Decomposition Catalysts for Hydrogen Production
Abstract Ru/CeO 2 is a promising catalyst for H 2 production from ammonia decomposition due to the chemical properties of cerium dioxide and its particular interaction with Ru. In this work, Ru/CeO 2 catalysts prepared by mechanochemical synthesis are studied in comparison with conventional impregnated catalysts to investigate the relevant parameters for catalytic ammonia decomposition. Different Ru precursors are used on CeO 2 supports with varying surface areas, leading to a portfolio of catalysts with different characteristics such as CeO 2 crystallite size, surface basicity, defectiveness, metal‐support interaction, reducibility, spillover effect, metal particle dispersion and dimension, and actual Ru loading. The combination of catalytic results and different characterization techniques allows for a better understanding of the importance of the different factors that affect ammonia decomposition on Ru/CeO 2 catalysts, highlighting the role of particle size and Ru─H bond strength, whose relative relevance, in turn, is dependent on Ru precursor and synthesis method.
Authors
- Sara Colussi (ORCID: https://orcid.org/0000-0001-5316-1746)
- Maila Danielis (ORCID: https://orcid.org/0000-0001-8469-9282)
- Alessandro Trovarelli (ORCID: https://orcid.org/0000-0002-1396-4031)
- Andrea Felli (ORCID: https://orcid.org/0000-0003-2474-0305)
Institutions
- University of Udine (IT)
- National Interuniversity Consortium of Materials Science and Technology (IT)
Publication Details
- Journal
- ChemCatChem
- Published
- 2025-05-26
- DOI
- https://doi.org/10.1002/cctc.202500585
- Citations
- 7
- Primary Topic
- Ammonia Synthesis and Nitrogen Reduction
- Type
- article
- Field-Weighted Citation Impact
- 2.72
Funders
- European Commission