Synthesis, Characterization, and Catalytic Activity of Nanocrystalline La1-xEuxFeO3 during the Combustion of Toluene

Nanostructured LaFeO3 and substituted La1-xEuxFeO3 (x = 0.1, 0.15, and 0.2) perovskites were synthesized by sol-gel auto-combustion and their activities during the combustion of toluene were evaluated. The structure and physico-chemical properties of the perovskites were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and BET surface area analyses. The compounds were crystallized as a perovskite phase with an orthorhombic structure. The mean particle size of the perovskites increased with an increase in europium loading while the specific surface area decreased. Characterization data confirmed that a total insertion of Eu into LaFeO3 occurred at x ≤ 0.15. However, Eu2O3 segregation occurred to some extent especially at x > 0.15. The catalytic activity of the catalysts increased substantially with an increase in Eu substitution in the evaluated range.

Graphical abstractThe paper reports a study of the synthesis of nanocrystalline La1-xEuxFeO3 (x = 0, 0.1, 0.15, and 0.2) perovskites using sol-gel combustion (SGC), characterization, and their activity for catalytic combustion of toluene.Figure optionsDownload full-size imageDownload as PowerPoint slide