Ceria-Based Composites for Catalytic Abatement of CO, Soot and VOCs

Dear Colleagues,

Over the past several years, cerium oxide (CeO₂) has received a great deal of attention as a support in heterogeneous catalysis due to the remarkably active Ce⁴⁺/Ce³⁺ redox pair and the efficient oxygen vacancies responsible for its high oxygen storage capacity (OSC). Apart from the intrinsic properties of ceria, structural characteristics such as the size and shape of ceria have been found to play a crucial role in the catalytic performance of Ce-based catalysts. In addition, the doping of ceria support with other elements of different ionic radii or the formation of a solid solution with another metal oxide can also greatly increase the reducibility and the oxygen exchange capacity. Furthermore, it is generally accepted that high dispersion or even atomic dispersion of active metals on the surface of ceria needs to be achieved in order to enhance the strong metal support interaction and thus the performance of Ce-based catalysts. The use of appropriate characterization techniques (e.g., HR-TEM, high-pressure-XPS, EPR), in situ spectroscopic experiments, and intrinsic kinetic data acquired from theoretical calculations and catalytic experiments need to be combined in order to investigate the correlation between structure and catalytic performance.

This Special Issue aims to cover recent progress and advances in Ce-based catalysts:

• In redox reactions (e.g., CO oxidation, WGS, soot combustion and VOCs oxidation);
• In reforming processes (e.g., alcohol reforming for H₂ production);
• In photocatalysis (e.g., for wastewater treatment and water splitting);
• In thermochemical water splitting (e.g., for solar reactors for the thermal splitting of H₂O and CO₂ for fuel generation);
• In fuel cells (e.g., SOFCs or PEM FCs)

This includes novel synthesis methods of catalysts, in situ characterization techniques, and kinetics results over the above-mentioned applications.

Guest Editor

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• Ceria nanoshapes
• Doped ceria
• Ceria structural defects
• Atomically dispersed metals on ceria surface
• Selective CO oxidation
• Redox reactions
• Reforming processes
• Photocatalysis
• Fuel Cell applications