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Hydrogen production by ethanol steam reforming over Ni/SBA-15 mesoporous catalysts: Effect of Au addition

Paper ID Volume ID Publish Year Pages File Format Full-Text
53899 46988 2015 7 PDF Available
Title
Hydrogen production by ethanol steam reforming over Ni/SBA-15 mesoporous catalysts: Effect of Au addition
Abstract

•Au was incorporated into Ni/SBA-15 catalyst to improve the performance in SRE.•Au promoter enhanced the dispersion of Ni on SBA-15 mesoporous support.•Au promoter is favor of the formation of smaller nickel particles.•Au promoter strengthened the interaction between the SBA-15 support and NiO.

A series of Ni/SBA-15 and Ni-Au/SBA-15 mesoporous catalysts were synthesized by incipient wetness impregnation and tested in ethanol steam reforming for hydrogen production. ICP-OES, N2 adsorption–desorption, XRD, H2-TPR, TEM and TG-DTG were used to characterize these catalysts in detail. It was found that the incorporation of Au into Ni/SBA-15 catalysts not only improved the dispersion of the NiO phase to form the smaller nickel oxide particle, but also strengthened the interaction between the SBA-15 support and NiO phase, thus efficiently reducing the coke deposition on active sites. Due to these promoting effects, the Au promoted Ni/SBA-15 catalyst showed a high activity and excellent long-term stability for ethanol steam reforming.

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Keywords
Ethanol steam reforming; Ni-based catalyst; Au promoter; SBA-15; Hydrogen production; Mesoporous
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 258, Part 1, 1 December 2015, Pages 162–168
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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