RT journal article
T1 Supported Ce/Zr pyrochlore monolayers as a route to single cerium atom catalysts with low temperature reducibility
A1 Montes Monroy, José Manuel
A1 Manzorro Ureba, Ramón
A1 Chinchilla Reyes, Lidia Esther
A1 Celín, William E.
A1 Calvino Gámez, José Juan
A1 Pérez Omil, José Antonio
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 Catalysis
K1 Chemistry
K1 Materials Chemistry
AB The combination of structural characterization at atomic resolution, chemical data, and theoretical insights has revealed the unique nanostructures which develop in ceria supported on yttria-stabilized zirconia (YSZ) after being submitted to high-temperature reducing treatments. The results show that just a small ceria loading is needed for creating a supported Zr-rich pyrochlore (111) nanostructure, resembling the structure of single cerium atom catalysts. The specific atomic arrangement of this nanostructure allows to explain the improvement of the reducibility at low temperature. The reduction mechanism can be extrapolated to ceria-zirconia mixed oxides with pyrochlore-like cationic ordering, exposing Zr-rich (111) surfaces. The results gathered here provide key information to understand the redox behavior of these types of systems, which may contribute to improving the design of new ceria-zirconia based materials, with lower content of the lanthanide element, nearly 100% cerium atom utilization, and applications in environmental catalysis.
PB Elsevier
SN 2589-0042
YR 2023
FD 2023
LK http://hdl.handle.net/10498/32560
UL http://hdl.handle.net/10498/32560
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026