La1-xCaxCo1-yFeyO3 perovskites type oxides. Preparation, characterisation, stability and catalytic potentiality for the total oxidation of propane.

MERINO, NORA; BARBERO, BIBIANA P; CELLIER, C.; ANDRADE, J.; LUIS EDUARDO CADUS

Catalysis Letters

Springer Science

Año: 2007 vol. 113 p. 130 - 140

In La1-xCaxCo1-yFeyO3 perovskites, the calcium substitution modi.es the crystalline structure toward a pseudocubic one and produces an electronic unbalance, compensated by the formation of oxygen vacancies and Fe4+ ions. It also increases slightly the ethanol conversion in total combustion, compensating the detriment of catalytic activity caused by the iron substitution and it increases notably the selectivity to total oxidation.1-xCaxCo1-yFeyO3 perovskites, the calcium substitution modi.es the crystalline structure toward a pseudocubic one and produces an electronic unbalance, compensated by the formation of oxygen vacancies and Fe4+ ions. It also increases slightly the ethanol conversion in total combustion, compensating the detriment of catalytic activity caused by the iron substitution and it increases notably the selectivity to total oxidation.4+ ions. It also increases slightly the ethanol conversion in total combustion, compensating the detriment of catalytic activity caused by the iron substitution and it increases notably the selectivity to total oxidation.