TY - JOUR

T1 - Methane Dry Reforming Catalysts Based on Pr-Doped Ceria–Zirconia Synthesized in Supercritical Propanol

AU - Arapova, Marina

AU - Smal, Ekaterina

AU - Bespalko, Yuliya

AU - Valeev, Konstantin

AU - Fedorova, Valeria

AU - Hassan, Amir

AU - Bulavchenko, Olga

AU - Sadykov, Vladislav

AU - Simonov, Mikhail

N1 - This research was funded by the Russian Science Foundation (grant number 18-73-10167).

PY - 2023/6

Y1 - 2023/6

N2 - 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/Ce0.75Zr0.25−xPrxO2 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/Ce0.75Zr0.15Pr0.1O2 catalyst prepared by one-pot method showed stable operation in the MDR reaction for 30 h at CO2 and CH4 conversions of ~40% and an H2 yield of ~18% (T = 700 °C, τ = 10 ms).

AB - 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/Ce0.75Zr0.25−xPrxO2 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/Ce0.75Zr0.15Pr0.1O2 catalyst prepared by one-pot method showed stable operation in the MDR reaction for 30 h at CO2 and CH4 conversions of ~40% and an H2 yield of ~18% (T = 700 °C, τ = 10 ms).

KW - ceria–zirconia

KW - dry reforming

KW - methane

KW - oxygen vacancies

KW - stability

KW - supercritical synthesis

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85164123708&origin=inward&txGid=e683c79fa98983732d47a77d6a2d5fc3

UR - https://www.mendeley.com/catalogue/bab2f813-3a55-3a17-8ca7-a98af91a957a/

U2 - 10.3390/en16124729

DO - 10.3390/en16124729

M3 - Article

VL - 16

JO - Energies

JF - Energies

SN - 1996-1073

IS - 12

M1 - 4729

ER -