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Combined theoretical and nanoscale experimental study of Pb(Ca,Ba)TiO3, Pb(Sr,Ba)TiO3, and Pb(Sr,Ca)TiO3complex perovskite structures: An investigation of the ferroelectric and electronic properties
(2017-01-01)
Combined experimental and first-principles studies have been conducted to obtain a fundamental understanding of the effect of A-site chemical doping on the electronic structure and ferroelectric behavior of Pb(Ca,Ba)TiO3, ...
Lanthanum-based perovskites obtained by the polymeric precursor method
(Springer, 2008-01-01)
Cobalt oxides, specially the ones with perovskite structure, are of a high technological interest, due to their interesting optical, electrical and magnetic properties. La(1 -x)Ca(x)CoO(3) powder samples were synthesized ...
Lanthanum-based perovskites as catalysts for the ozonation of selected organic compounds
(Elsevier, 2013-08)
The ozonation of two model compounds (oxalic acid and dye C. I. Reactive Blue 5) was carried out in the presence of La containing perovskites prepared by the citrate method. With the exception of LaFe0.9Cu0.1O3, all samples ...
Synthesis, structural characterization and magnetic properties of the monoclinic ordered double perovskites BaLaMSbO6, with M = Mn, Co and Ni
(Elsevier Science Sa, 2014-09)
Double perovskites BaLaMnSbO6, BaLaCoSbO6 and BaLaNiSbO6, were synthesized by conventional ceramic method in air, as polycrystalline powders. The Mn and Ni compounds belong to the I 2/m monoclinic space group, while the ...
La1−xCaxAl1−yNiyO3 perovskites used as precursors of nickel based catalysts for ethanol steam reforming
(Elsevier, 2015-10)
On the search of new design procedures for high performance catalysts we have obtained a very precisely defined surface architecture starting from a particular host structure. In this case, high purity La1−xCaxAl1−yNiyO3 ...
Weak ferromagnetism and superparamagnetic clusters coexistence in YFe1−xCoxO3 (0 ≤ x ≤ 1) perovskites
(Pergamon-Elsevier Science Ltd, 2017-10)
YFe1-xCoxO3 (x = 0, 0.3, 0.5, 0.7 and 1) perovskite solid solutions were synthesized by thermal decomposition of the cyano-metal complexes Y[Fe1-xCox(CN)6]·4H2O. All perovskites belong to the orthorhombic Pnma space group. ...
Influence of Cu(II) in the SrSnO3 crystallization
(Springer, 2011-11-01)
Perovskite type oxides have been intensively studied due to their interesting optical, electrical, and catalytic properties. Among perovskites the alkaline earth stannates stand out, being strontium stannates (SrSnO3) the ...
Methane partial oxidation by the lattice oxygen of the lanio₃δ perovskite. a pulse study
(Universidad Nacional de Colombia Sede Medellín, 2010)
LaNiO₃ perovskite was prepared by the selfcombustion method and tested as catalyst for CH4 activation using the oxygen lattice at 700°C and 800°C. Based on the non-stoichiometry experiments, the perovskite formula is written ...
Óxidos do tipo perovskita para reação de redução de no com CO
(Sociedade Brasileira de Química, 2009)
In this work, the perovskite-type oxides LaNiO3, LaMnO3, La0,7Sr0,3NiO3 and La0,7Sr0,3MnO3 were prepared by co-precipitation and tested in the NO reduction with CO at 400 and 500 ºC for 10 h. The catalysts were characterized ...
New methodology for a faster synthesis of SrSnO3 by the modified Pechini method
(2013-04-01)
SrSnO3, a perovskite-type complex oxide, was synthesized by the modified Pechini method using two different precursors, tin chloride and metallic tin. The first one is already traditional in the literature and it claims ...