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Effect of tetragonal ZrO2 on the catalytic activity of Ni/ZrO2 catalyst prepared from amorphous Ni–Zr alloys

Paper ID Volume ID Publish Year Pages File Format Full-Text
53182 46921 2006 5 PDF Available
Title
Effect of tetragonal ZrO2 on the catalytic activity of Ni/ZrO2 catalyst prepared from amorphous Ni–Zr alloys
Abstract

In zirconia-supported nickel catalysts, the influence of the ZrO2 phase on the catalytic activity for CO2 methanation has been investigated by TPD and TPR measurements. Ni/ZrO2 catalysts with various amounts of the tetragonal ZrO2 polymorph were prepared from amorphous Ni–Zr alloys by an oxidation–reduction treatment. The fraction of tetragonal ZrO2 in the Ni/ZrO2 catalysts increased with increasing nickel content of the amorphous alloy precursors. The methanation activity of Ni/ZrO2 was strongly influenced by the ZrO2 phase change. The tetragonal zirconia-supported nickel catalysts showed a higher turnover frequency for the methanation reaction and a greater CO2 adsorption than the monoclinic zirconia-supported nickel catalysts.

Keywords
Amorphous alloy; Nickel; Tetragonal zirconia; Methanation; Carbon dioxide
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Effect of tetragonal ZrO2 on the catalytic activity of Ni/ZrO2 catalyst prepared from amorphous Ni–Zr alloys
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 7, Issue 1, January 2006, Pages 24–28
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
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Full-text PDF Download
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