| Summary: | This paper is devoted to the study of active and stable nickel catalysts for methane dry reforming based on Pr-doped ceria–zirconia obtained via the solvothermal continuous method. Studies on the physicochemical and catalytic properties of the 5%Ni/Ce<sub>0.75</sub>Zr<sub>0.25−x</sub>Pr<sub>x</sub>O<sub>2</sub> series have showed that Pr introduction leads to an increase in the amount of highly reactive oxygen in the oxide lattice. Praseodymium-based catalysts showed significantly higher reactant conversions. In addition to the nature of support, the method of nickel introduction was also studied; Ni was added both using impregnation and the one-pot procedure with mixed oxide preparation. The method of Ni addition was shown to have significant effect on the morphology of its particles and Ni-support interaction, and, respectively, on catalytic activity and coking stability. The 5%Ni/Ce<sub>0.75</sub>Zr<sub>0.15</sub>Pr<sub>0.1</sub>O<sub>2</sub> catalyst prepared by one-pot method showed stable operation in the MDR reaction for 30 h at CO<sub>2</sub> and CH<sub>4</sub> conversions of ~40% and an H<sub>2</sub> yield of ~18% (T = 700 °C, τ = 10 ms).
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