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Methanation of carbon dioxide over nickel-based Ce0.72Zr0.28O2 mixed oxide catalysts prepared by sol–gel method

Paper ID Volume ID Publish Year Pages File Format Full-Text
42274 45918 2009 7 PDF Available
Title
Methanation of carbon dioxide over nickel-based Ce0.72Zr0.28O2 mixed oxide catalysts prepared by sol–gel method
Abstract

Ni–Ce0.72Zr0.28O2 catalysts containing up to 15 wt% Ni were prepared, characterized and their catalytic activity was investigated in carbon dioxide methanation. The impact of the pre-treatment and the gas hourly space velocity were also studied. NiO dispersion and part of its incorporation into the mixed oxide lattice obviously increased the activity and stability of the catalysts. Very high CO2 conversions were achieved at 350 and 400 °C, together with extremely high selectivity to methane (>98%) for all catalysts. Finally, high stability on stream toward deactivation was observed up to 150 h at 350 °C. 10 wt%Ni–Ce0.72Zr0.28O2 was found to be the optimal catalyst.

Graphical abstractNi–Ce0.72Zr0.28O2 catalysts containing up to 15 wt% Ni were prepared, characterized and their catalytic activity was investigated in carbon dioxide methanation. Very high CO2 conversions were achieved at 350 °C, together with extremely high selectivity to methane (>98%) for all catalysts. Finally, high stability on stream toward deactivation was observed up to 150 h.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Catalysis; Methanation; Mixed oxides; Carbon dioxide
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Methanation of carbon dioxide over nickel-based Ce0.72Zr0.28O2 mixed oxide catalysts prepared by sol–gel method
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 369, Issues 1–2, 15 November 2009, Pages 90–96
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
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