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http://dx.doi.org/10.1021/cm011292l

has been cited by the following article:

• TITLE: Catalytic Performance of La0.6Ca0.4Fe1-xNixO3 Perovskites in DME Oxidation

  AUTHORS: Gina Pecchi, Ruddy Morales, Daniela Salinas, Eduardo J. Delgado, José Luis García Fierro

  KEYWORDS: DME, Perovskites, Oxidation, Iron, Nickel

  JOURNAL NAME: Modern Research in Catalysis, Vol.4 No.4, October 16, 2015

  ABSTRACT: Substituted La0.6Ca0.4Fe1-xNixO3 (0.0 ≤ x ≤ 1.0) perovskite-type oxides prepared by the amorphous citrate method have been investigated as catalysts in the dimethyl ether (DME) oxidation reaction. The samples with an x ≤ 0.3 composition show an orthorhombic structure, while the intermediate compositions with 0.5 ≤ x ≤ 0.9 show a less crystalline orthorhombic perovskite structure with segregated phases that increase upon increasing the Ni content. The progressive substitution of Fe3+ by Ni2+ in La0.6Ca0.4FeO3 entails the progressive formation of oxygen vacancies and Fe4+ species for Ni substitution degrees of x ≤ 0.5. For larger degrees of substitution with x > 0.7, segregated phases and a progressive loss of the perovskite structure are detected. The highest catalytic performance for the total combustion of DME is obtained from equimolar substitution in the B-site position (Fe0.5Ni0.5), in which a large extent of Fe4+ species and oxygen vacancies are present.