Synthesis of lanthanum-iron mixed oxides by the solvothermal reaction in the presence of amine

Abstract

Lanthanum-iron mixed oxides with the perovskite structure are widely used as catalysts, sensors, etc. In this study, the synthesis of LaFeO₃ by the solvothermal method was examined, and it was found that this compound was formed by the solvothermal reaction of La acetate (La(OAc)₃) with Fe acetylacetonate in the presence of amine. The yield of LaFeO₃ was analyzed by Rietveld method, which suggested that the phase-pure LaFeO₃ was obtained in the presence of hexamethylendiamine with N/(OAc)=20.