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Alloying effects of Pd and Ni on the catalysis of the oxidation of dry CH4 in solid oxide fuel cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
42278 45918 2009 6 PDF Available
Title
Alloying effects of Pd and Ni on the catalysis of the oxidation of dry CH4 in solid oxide fuel cells
Abstract

The mechanisms of Ni, Pd and Pd-Ni catalysts in a solid oxide fuel cell (SOFC) were studied to clarify the alloying effects of Pd and Ni on the catalysis for the oxidation of CH4 fuel. Pd-Ni and Pd catalysts loaded on a composite anode of La0.8Sr0.2CrO3 (LSCr) and Ce0.8Sm0.2O1.9 (SDC) show catalytic activity for the oxidation of CH4. The impedance study for these anodes clearly suggests a difference between the reaction mechanisms on the Pd–Ni/and the Pd/LSCr–SDC anodes. The dominant reaction path for the methane activation seems to be a non-electrochemical process on the Pd-Ni catalyst, whereas the activation of CH4 over the Pd catalyst occurs only on electrochemically active sites.

Graphical abstractThe effects of Ni, Pd, and Pd-Ni catalysts on the oxidation of dry CH4 in SOFCs have been investigated in detail. Both Pd/and Pd–Ni/LSCr–SDC anodes show some catalytic activity for the oxidation of CH4, but the reaction mechanisms are different.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Impedance; Perovskite; Ceria; Hydrocarbon; Fuel cell
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Alloying effects of Pd and Ni on the catalysis of the oxidation of dry CH4 in solid oxide fuel cells
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 369, Issues 1–2, 15 November 2009, Pages 119–124
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
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