Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Structural, textural, and catalytic properties of Ni-CexZr1-xO2 catalysts for methane dry reforming prepared by continuous synthesis in supercritical isopropanol. / Pavlova, Svetlana; Smirnova, Marina; Bobin, Aleksei и др.
в: Energies, Том 13, № 14, 3728, 20.07.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Structural, textural, and catalytic properties of Ni-CexZr1-xO2 catalysts for methane dry reforming prepared by continuous synthesis in supercritical isopropanol
AU - Pavlova, Svetlana
AU - Smirnova, Marina
AU - Bobin, Aleksei
AU - Cherepanova, Svetlana
AU - Kaichev, Vasily
AU - Ishchenko, Arcady
AU - Selivanova, Aleksandra
AU - Rogov, Vladimir
AU - Roger, Anne Cécile
AU - Sadykov, Vladislav
PY - 2020/7/20
Y1 - 2020/7/20
N2 - A series of 5%Ni-CexZr1-xO2 (x = 0.3, 0.5, 0.7) catalysts has been prepared via one-pot solvothermal continuous synthesis in supercritical isopropanol and incipient wetness impregnation of CexZr1-xO2 obtained by the same route. The textural, structural, red-ox, and catalytic properties in methane dry reforming (MDR) of Ni-modified Ce-Zr oxides synthesized by two routes have been compared. It was shown by XRD, TEM, and Raman spectroscopy that the method of Ni introduction does not affect the phase composition of the catalysts, but determines the dispersion of NiO. Despite a high dispersion of NiO and near-uniform distribution of Ni within Ce-Zr particles observed for the one-pot catalysts, they have shown a lower activity and stability in MDR as compared with impregnated ones. This is a result of a low Ni concentration in the surface layer due to segregation of Ce and decoration of nickel nanoparticles with support species.
AB - A series of 5%Ni-CexZr1-xO2 (x = 0.3, 0.5, 0.7) catalysts has been prepared via one-pot solvothermal continuous synthesis in supercritical isopropanol and incipient wetness impregnation of CexZr1-xO2 obtained by the same route. The textural, structural, red-ox, and catalytic properties in methane dry reforming (MDR) of Ni-modified Ce-Zr oxides synthesized by two routes have been compared. It was shown by XRD, TEM, and Raman spectroscopy that the method of Ni introduction does not affect the phase composition of the catalysts, but determines the dispersion of NiO. Despite a high dispersion of NiO and near-uniform distribution of Ni within Ce-Zr particles observed for the one-pot catalysts, they have shown a lower activity and stability in MDR as compared with impregnated ones. This is a result of a low Ni concentration in the surface layer due to segregation of Ce and decoration of nickel nanoparticles with support species.
KW - Ce-Zr oxide
KW - Methane dry reforming
KW - Ni loading
KW - Synthesis in supercritical isopropanol
KW - methane dry reforming
KW - ZIRCONIA
KW - synthesis in supercritical isopropanol
KW - ELECTRON-MICROSCOPY
KW - TETRAGONAL PHASE
KW - SUPPORT
KW - NICKEL
KW - CERIA
KW - CONTINUOUS HYDROTHERMAL SYNTHESIS
KW - NI
KW - OXIDES
KW - OXYGEN STORAGE CAPACITY
UR - http://www.scopus.com/inward/record.url?scp=85089804146&partnerID=8YFLogxK
U2 - 10.3390/en13143728
DO - 10.3390/en13143728
M3 - Article
AN - SCOPUS:85089804146
VL - 13
JO - Energies
JF - Energies
SN - 1996-1073
IS - 14
M1 - 3728
ER -
ID: 25291978