Nano-Engineered Nickel Catalysts Supported on 4-channel α-Al₂O₃ Hollow Fibers for Dry Reforming of Methane
A nickel (Ni) nanoparticle catalyst, supported on 4-channel α-Al2O3 hollow fibers, was synthesized by atomic layer deposition (ALD). Highly dispersed Ni nanoparticles were successfully deposited on the outside surfaces and the inside porous structures of hollow fibers. The catalyst was employed to catalyze the dry reforming of methane (DRM) reaction and showed a methane reforming rate of 2040 Lh-1gNi-1 at 800°C. NiAl2O4 spinel was formed when Ni nanoparticles were deposited on alpha-alumina substrates by ALD, which enhanced the Ni-support interaction. Different cycles (two, five, and ten) of Al2O3 ALD films were applied on the Ni/hollow fiber catalysts to further improve the interaction between the Ni nanoparticles and the hollow fiber support. Both the catalyst activity and stability were improved with the deposition of Al2O3 ALD films. Among the Al2O3 ALD coated catalysts, the catalyst with five cycles of Al2O3 ALD showed the best performance.
Z. Shang et al., "Nano-Engineered Nickel Catalysts Supported on 4-channel α-Al₂O₃ Hollow Fibers for Dry Reforming of Methane," AIChE Journal, vol. 64, no. 7, pp. 2625 - 2631, American Institute of Chemical Engineers (AIChE), Jul 2018.
The definitive version is available at https://doi.org/10.1002/aic.16160
Chemical and Biochemical Engineering
Keywords and Phrases
Alumina; Aluminum Oxide; Atomic Layer Deposition; Catalyst Activity; Fibers; Methane; Nanocatalysts; Nanoparticles; Nickel; Synthesis (Chemical); Dry Reforming-of-Methane; Fiber Catalysts; Hollow Fiber; Methane Reforming; Nanoparticle Catalysts; Ni Nanoparticles; Nickel Nanoparticles; Porous Structures; Catalyst Supports
International Standard Serial Number (ISSN)
Article - Journal
© 2018 American Institute of Chemical Engineers (AIChE), All rights reserved.
01 Jul 2018
This work was supported in part by the U.S. Department of Energy (Contract Number DE-FE0029760).