Regeneration of Ni-Zr Methane Dry Reforming Catalysts in CO₂: Reduction of Coking and Ni Redispersion.

As illustrated in Figure 2 a, the CO 2 conversion profiles of the 100 nm Ni–Zr sample for the first–fourth DRM cycle before CO 2 titration indicate a clear trend of decreasing catalytic activity with each successive cycle.

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