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. 2018 Aug 7;8(9):8630–8641. doi: 10.1021/acscatal.8b01237

Figure 1.

Figure 1

(a) Temperature-dependence of the CO oxidation activity for a reaction mixture of 5 vol % CO, 10 vol % O2, and 85 vol % He (total flow 50 mL min–1) for differently pretreated Co3O4; (b) operando XRD during CO oxidation at 200 °C after oxidation pretreatment of Co3O4 at 400 °C in synthetic air and after reduction of preoxidized Co3O4 in 5 vol % H2 at 400 °C. The XRD patterns before starting the reaction are included for comparison.