Catalytic performance Catalyst activity 8 Oxidation 8 Carbon dioxide 6 Catalysts 6 Cerium oxide 6 Nickel 6 Alkalinity 4 Biomimetics 4 COPROX 4 Carbon 4 Catalysis 4 Catalyst supports 4 Cerium 4 Cerium compounds 4 Copper 4 Feed compositions 4 Gas producers 4 Horseradish peroxidase 4 Hydrogen production 4 Reaction kinetics 4 4-Aminoantipyrine 2 4-aminoantipyrine 2 Activation conditions 2 Activation energy 2 Activation treatment 2 Activity recovery 2 Activity results 2 After-treatment 2 Aliphatic hydrocarbons 2