Synthesis of perovskite-type oxide, LaFeO3, from coordination polymer precursor, La[Fe(CN)6]•5H2O

Abstract

Perovskite-type oxide, LaFeO3, was prepared from coordination polymer precursor, La[Fe(CN)6]•5H2O by calcination with the different two systems. In a muffle furnace system, the perovskite-type oxide was given by calcination at>500°C. The specific surface area of LaFeO3 powder calcined at 500°C for 24 h was 18m2•g-1, which was the largest among single phase perovskitetype oxides calcined in a muffle furnace. In a gas-flow system, the perovskite-type oxide was given by calcination at significantly low temperature (>250°C). The specific surface area of LaFeO3 powder calcined at 300°C for 1 h in a gas-flow system was dependent on O2 partial pressure.