Publications by authors named "Giulia Spezzati"
Article Synopsis
- Developing advanced three-way catalysts is crucial for controlling emissions during cold starts, focusing on lower temperature efficiency.
- Density functional theory and microkinetics simulations reveal that NO formation at low temperatures primarily occurs through a dimer on metallic Pd, but re-oxidation of Pd limits NO conversion and requires richer conditions for high nitrogen selectivity.
- Doping CeO with Fe enhances oxygen vacancies, leading to improved nitrogen selectivity, which is supported by experimental evidence from a Pd catalyst on Fe-doped CeO made via flame spray pyrolysis.
Ceria-supported Pd is a promising heterogeneous catalyst for CO oxidation relevant to environmental cleanup reactions. Pd loaded onto a nanorod form of ceria exposing predominantly (111) facets is already active at 50 °C. Here we report a combination of CO-FTIR spectroscopy and theoretical calculations that allows assigning different forms of Pd on the CeO(111) surface during reaction conditions.
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