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A novel catalyst with plate-type anodic alumina supports, Ni/NiAl2O4/γ-Al2O3/alloy, for steam reforming of methane

Paper ID Volume ID Publish Year Pages File Format Full-Text
42913 45946 2008 8 PDF Available
Title
A novel catalyst with plate-type anodic alumina supports, Ni/NiAl2O4/γ-Al2O3/alloy, for steam reforming of methane
Abstract

A series of plate-type metal-monolithic anodic alumina supported nickel catalysts were employed to investigate their reactivity in the steam reforming of methane reactions. After H2 reduction, a fresh 4.7 wt% Ni/γ-Al2O3/alloy catalyst provided only a short-term activity, and then deactivated quickly. By the temperature programmed reaction technologies, the oxidation of surface sintered metallic Ni particles in the SRM test was suggested to be the main reason for the catalyst deactivation. As a result, a 17.9 wt% Ni/NiAl2O4/γ-Al2O3/alloy catalyst with an interfacial NiAl2O4 layer was synthesized, which showed excellent SRM reactivity at 700 °C and this was believed to be resulted from the existence of interfacial NiAl2O4 layer which anchored the top metallic nickel particles and effectively suppressed catalyst sintering. Moreover, no unfavorable effect was evidenced over the SRM reactivity of anodic Ni catalysts when applying the electrically heated pattern. Nevertheless, for the industrialization of anodic nickel catalysts, some efforts should be made to alleviate the deterioration of anodic supports and the catalysts sintering under the SRM reactions.

Graphical abstractA 17.9 wt% plate-type metal-monolithic anodic alumina supported Ni catalyst with an interfacial NiAl2O4 layer showed excellent SRM reactivity at 700 °C and this was believed to be resulted from the existence of interfacial NiAl2O4 layer which anchored the top metallic nickel particles and effectively suppressed catalyst sintering.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Anodic alumina support; CH4; Nickel catalyst; Steam reforming; Spinel
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A novel catalyst with plate-type anodic alumina supports, Ni/NiAl2O4/γ-Al2O3/alloy, for steam reforming of methane
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 347, Issue 2, 15 September 2008, Pages 200–207
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us