Impregnated Ni/ZrO2 and Pt/ZrO2 catalysts in dry reforming of methane: Activity tests in excess methane and mechanistic studies with labeled 13CO2

- A Pt4f7/2 binding energy shift is detected on the highly dispersed Na-promoted Pt/ZrO2.
- During DRM at T < 500 °C more surface carbonates are seen on Ni/ZrO2 than on Pt/ZrO2.
- The same initial reaction pathways are suggested for Ni and Pt catalysts.
- The surface carbon species from CH4 and 13CO2 scramble on 3 wt% Ni/ZrO2 at 600 °C.