Buscar
Mostrando ítems 1-10 de 92
Lanthanum cobaltite black pigments with perovskite structure
(2013-05-09)
In this work La1-xCaxCoO3 (x = 0-0.4) pigments were synthesized by the polymeric precursor method with heat treatments at 700, 800 and 900 C for 4 h. The powders were characterized by colorimetry, UV-vis spectroscopy and ...
Lanthanum cobaltite black pigments with perovskite structure
(2013-05-09)
In this work La1-xCaxCoO3 (x = 0-0.4) pigments were synthesized by the polymeric precursor method with heat treatments at 700, 800 and 900 C for 4 h. The powders were characterized by colorimetry, UV-vis spectroscopy and ...
PARA-Ni-TETRAAMINOPHENYLPORPHYRIN/Co-COBALTITE/SnO2:F MODIFIED ELECTRODES: ELECTROCATALYTIC BEHAVIOR TOWARD THE OXIDATION OF HIDRAZINE
(Sociedad Chilena de Química, 2005)
Structural study of Ni-substituted YBaCo4-xNixO7 frustrated cobaltites
(Academic Press Inc Elsevier Science, 2015-07-20)
In this work we report a study of the thermal stability and the evolution of the crystal structure of Ni-substituted YBaCo4-xNixO7 cobaltites, for x=0, 0.10 and 0.20. Synchrotron X-ray powder diffraction and thermodiffraction ...
On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5
(American Chemical Society, 2013-08-06)
Recent studies have shown that the addition of Ca as host ion in the layered compounds RBaCo2O5+δ (with R a rare earth or yttrium) produces a dramatic effect on their magnetic properties, as well as on their Seebeck ...
Effects of oxygen non-stoichiometry on the physical properties of the YBaCo2 O5 + δ layered cobaltites
(Elsevier Science, 2006-10)
We have synthesized the layered cobaltites YBaCo2 O5 + δ with different oxygen contents (δ1 and δ2), and characterized its structural and physical properties using various experimental techniques within the 80-500 K ...
Study of the electrode polarization resistance of cobaltites with high Ba content as cathode for IT-SOFC
(Electrochemical Society, 2017-05)
The phase relationships and the electrochemical behavior of cobaltites with high content of Ba, such as, La1-xBaxCoO3-δ with x = 0.5, 0.7 and 1.0, Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) and BaCo0.7Fe0.2Nb0.1O3-δ (BCFN), were ...
Para-ni-tetraaminophenylporphyrin/co-cobaltite/sno2 : f modified electrodes: electrocatalytic behavior toward the oxidation of hidrazine
(SOCIEDAD CHILENA DE QUÍMICA, 2005)