Key words: ceria-zirconia, solvothermal synthesis, isopropanol, methane dry reforming
Single-phase Ce—Zr-oxides with fluorite structure were synthesized by the solvothermal method in an isopropanol medium at parameters exceeding the critical ones for isopropanol. The influence of synthesis parameters on the characteristics of the obtained materials (specific surface area, morphology, particle size, phase composition) was established. 5 wt. % Ni or 5 wt. % Ni+Co (1:1 by wieght) were deposited by incipient wetness impregnation. The structure and properties of samples were characterized using X-ray diffraction, Raman spectroscopy, high-resolution transmission electron microscopy, temperature-programmed reduction by hydrogen, and relationships between the sample composition and catalytic performance (CH4 and CO2 conversion, hydrogen yield and H2/CO ratio) in dry reforming of methane (DRM) were investigated. The effect of the deposited metal component composition and Ce/Zr ratio in the support on the catalytic activity and stability during the DRM process was demonstrated.
doi:10.34984/SCFTP.2022.17.2.006