Effect of the calcium on the textural, structural and catalytic properties

N. A. MERINO; B. P. BARBERO; C. CELLIER; J. ANDRADE GAMBOA; L. E. CADÚS

CATALYSIS LETTERS

Springer Science+Business Media, LLC

Año: 2007 vol. 113 p. 130 - 140

1011-372X

In La1-xCaxCo1-yFeyO3 perovskites, the calcium substitution modifies 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 modifies 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.