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Ni/(R₂O₃,CaO) Nanocomposites Produced by the Exsolution of R_1.5Ca_0.5NiO₄ Nickelates (R = Nd, Sm, Eu): Rare Earth Effect on the Catalytic Performance in the Dry Reforming and Partial Oxidation of Methane.

ABSTRACT: In order to clarify the role of R₂O₃ in the metal-oxide catalysts derived from complex oxide precursors, a series of R_1.5Ca_0.5NiO₄ (R = Nd, Sm, Eu) complex oxides was obtained. A significant systematic increase in the orthorhombic distortion of the R_1.5Ca_0.5NiO₄ structure (K₂NiF₄ type, Cmce) from Nd to Eu correlates with a corresponding decrease in their ionic radii. A reduction of R_1.5Ca_0.5NiO₄ in the Ar/H₂ gas mixture at 800 °C causes a formation of dense agglomerates of CaO and R₂O₃ coated with spherical 25-30 nm particles of Ni metal. The size of metal particles and oxide agglomerates is similar in all Ni/(R

SUBMITTER: Malyshev SA

PROVIDER: S-EPMC9610205 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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Ni/(R₂O₃,CaO) Nanocomposites Produced by the Exsolution of R_1.5Ca_0.5NiO₄ Nickelates (R = Nd, Sm, Eu): Rare Earth Effect on the Catalytic Performance in the Dry Reforming and Partial Oxidation of Methane.

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Ni/(R2O3,CaO) Nanocomposites Produced by the Exsolution of R1.5Ca0.5NiO4 Nickelates (R = Nd, Sm, Eu): Rare Earth Effect on the Catalytic Performance in the Dry Reforming and Partial Oxidation of Methane.

OmicsDI is part of the ELIXIR infrastructure

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Ni/(R₂O₃,CaO) Nanocomposites Produced by the Exsolution of R_1.5Ca_0.5NiO₄ Nickelates (R = Nd, Sm, Eu): Rare Earth Effect on the Catalytic Performance in the Dry Reforming and Partial Oxidation of Methane.