Appendix A. Supplementary data for Nanostructured CeO2 as support of Ni-catalysts for plasma-catalytic CO2 methanation: Tailoring support’s nanomorphology towards improved performance [Dataset]

1. Synthesis of the CeO2 supports. 2. Physicochemical characterization techniques and devices. 3. Plasma-catalytic and thermo-catalytic setups & experimental procedures. 4. SEM and TEM characterization: 4.1. CeO2 supports. 4.2. Reduced Ni-catalysts. 4.3. Spent Ni-catalysts (used in plasma-catalytic methanation). 5. X-ray diffraction. 6. N2-adsorption isotherms. 7. X-ray photoelectron spectrometry. 8. Raman spectroscopy. 9. 10 h time-on-stream methanation experiments