Nano-Engineered Nickel Catalysts Supported on 4-channel α-Al₂O₃ Hollow Fibers for Dry Reforming of Methane

Abstract

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.

Department(s)

Chemical and Biochemical Engineering

Comments

This work was supported in part by the U.S. Department of Energy (Contract Number DE-FE0029760).

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)

0001-1541; 1547-5905

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2018 American Institute of Chemical Engineers (AIChE), All rights reserved.

Publication Date

01 Jul 2018

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