(476a) Cerium Oxide Promoted Nickel Nanoparticles Deposited By Atomic Layer Deposition for Dry Reforming of Methane

Cerium oxide (CeO₂) was used to promote the catalytic performance of nickel (Ni) nanoparticles supported on four-channel structured alpha-Al₂O₃ hollow fibers for dry reforming of methane. Highly dispersed Ni nanoparticles were deposited on the hollow fibers by atomic layer deposition (ALD) using bis(cyclopentadienyl)nickel and hydrogen as precursors and CeO₂ was loaded by liquid phase impregnation method. X-ray diffraction, transmission electron microscopy, temperature program reduction, X-ray photoelectron spectroscopy, and temperature program surface reaction were conducted to reveal the properties of the catalysts. It was found that CeO₂ interacted with NiO and improved the catalytic activity. The CeO₂ promoted catalyst also exhibited an excellent performance after regeneration. In addition, CeO₂ can inhibit coke formation.