Mesoporous LaFeO3 catalysts for the oxidation of toluene and carbon monoxide

Wormhole-like orthorhombic LaFeO3 catalysts (LFO-1 and LFO-2) were prepared using the KIT-6 and SiO2 nanospheres as template, respectively. LFO-1 showed better catalytic activity with T50% and T90% of 155 and 180 °C for CO oxidation, and of 200 and 253 °C for toluene oxidation at 20000 mL/(g·h). The excellent catalytic performance was associated with its larger surface area (138 m2/g), higher adsorbed oxygen concentration, and better low-temperature reducibility as well as a wormhole-like mesoporous structure.

Graphical AbstractThe wormhole-like mesoporous LaFeO3 samples with surface areas of 65-138 m2/g were prepared by the hard-template method and showed high catalytic activity for the complete oxidation of CO and toluene, which is due to the large surface area, high adsorbed oxygen concentration, and good low-temperature reducibility.Figure optionsDownload full-size imageDownload as PowerPoint slide