Low-Temperature Catalytic Combustion of Cooking Fume over Pt/Y-Al2O3/Ce0.5-xZr0.5-xMn2xO2 Monolithic Catalyst

Abstract

Abstract The catalytic activity of the Pt/γ-Al 2 O 3 /Ce 0.5- x Zr 0.5- x Mn 2 x O 2 monolithic catalyst for the low-temperature catalytic combustion of cooking fume in a fixed-bed reactor was studied with a series of Ce 0.5- x Zr 0.5- x Mn 2 x O 2 complex oxides, and the effect of the Mn amount in Pt/γ-Al 2 O 3 /Ce 0.5- x Zr 0.5- x Mn 2 x O 2 was further investigated. The catalyst was characterized by X-ray diffraction (XRD), N 2 adsorption, and H 2 -temperature-programmed reduction (H 2 -TPR). XRD results revealed that Pt was well dispersed on the γ-Al 2 O 3 support and Ce 0.5- x Zr 0.5- x Mn 2 x O 2 matrix. H 2 -TPR and N 2 adsorption measurements showed the catalyst activity in the order x = 0.10 > x = 0.15 > x = 0.05 > x = 0 > x = 0.20. Pt/γ-Al 2 O 3 /Ce 0.4 Zr 0.4 Mn 0.2 O 2 had the highest activity ( T 90 = 495 K).