Cerium compounds Cerium 18 Oxides 10 Catalysis 8 Oxidation 8 Catalyst activity 6 Catalysts 6 Copper 6 Crystalline materials 6 Electrons 6 Hydrogen 6 Hydrogen purification 6 Band structure 4 Binary oxides 4 CO-PROX 4 COMPUESTOS DE CERIO 4 COPROX 4 Carbon dioxide 4 Carbonates 4 Catalyst selectivity 4 Catalyst supports 4 Catalytic performance 4 Ceria 4 Cerium oxide 4 Cerium oxide nanoparticle 4 Cerium oxides 4 Co-doped 4 Cobalt 4 Conduction band 4 Copper oxides 4