50 , 57 With the increase of Co content, the intensity of the λ peak belonging to the desorption of the oxygen lattice in Co 3 O 4 species near 700 °C increases gradually; meanwhile, the ε peak belonging to desorption of lattice oxygen in CuO species at 800 °C showed a trend of gradual decrease.
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Tracking of Active Sites as Well as the Compositing Effect over a Cu/Ce-Based Catalyst with Superior Catalytic Activity.
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The sentences
The concentration of Co 2+ showed an increasing trend in the CoCe samples ( Figures 5 g and S10a ).