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Methane autothermal reforming on nickel–ceria–zirconia based catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
51539 46846 2009 5 PDF Available
Title
Methane autothermal reforming on nickel–ceria–zirconia based catalysts
Abstract

Nickel catalysts supported on Ce0.5Zr0.5O2, CeO2/Al2O3, Ce0.5Zr0.5O2/Al2O3, and Al2O3 were investigated for methane autothermal reforming. Samples were characterized by BET area, X-ray diffraction, H2 temperature programmed reduction and temperature programmed desorption of CO2. Nickel dispersion was evaluated using a model reaction, the dehydrogenation of cyclohexane. Light-off experiments showed that methane autothermal reforming occurred in two steps, by an indirect mechanism: total combustion at lower temperatures followed by methane reforming by CO2 or steam at higher temperatures. Most catalysts exhibited good activity, stability, and a H2/CO ratio around 2.7 during stability tests that lasted 24 h. 10% Ni/Ce0.5Zr0.5O2/Al2O3 showed the best activity and its performance could be explained by its higher reducibility and Ni dispersion.

Keywords
Methane; Autothermal reforming; Ce0.5Zr0.5O2; Nickel
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Methane autothermal reforming on nickel–ceria–zirconia based catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 7, 10 March 2009, Pages 1090–1094
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