“…However, as already discussed, the CO oxidation over nanostructured Cu 0.1 Ce 0.9 O 2−y catalyst does not proceed by this type of surface reaction. As shown by other authors, apparent activation energies between 14.2 and 50.1 kJ/mol are typical of various surface reactions over a nanostructured Cu 0.1 Ce 0.9 O 2−y catalyst [43,50,51]. This is in agreement with apparent activation energies between 9.7 and 39.6 kJ/mol measured for surface reactions that were considered in this study.…”