Effect of Ni Content of Ni/γ‐Al₂O₃ Catalysts Prepared by the Atomic Layer Deposition Method on CO₂ Reforming of Methane

Abstract

Carbon dioxide reforming of methane is studied on Ni/γ‐Al 2 O 3 catalysts prepared using atomic layer deposition (ALD) as well as impregnation methods. Different Ni contents are studied to select the most suitable catalyst for this reaction. The results show that Ni loading has a vital impact on the catalytic performance. For the ALD samples, when Ni loading increases from 0.8% to 1.6%, the amount of NiO increases dramatically, leading to a better catalytic activity. However, further increasing Ni loading to 2.0% does not obviously enhance the catalytic performance. Due to the moderate NiO‐γ‐Al 2 O 3 interaction and the small size of Ni particles, ALD samples show superior activities and stabilities when compared with those of the impregnation samples.