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Design of Anodes for IT SOFC: Effect of Complex Oxide Promoters and Pd on Activity and Stability in Methane Steam Reforming of Ni/YSZ (ScSZ) Cermets

Published online by Cambridge University Press:  26 February 2011

Vladislav A Sadykov ,
Natalia V Mezentseva ,
Rimma v Bunina ,
Galina M Alikina ,
Anton I Lukashevich ,
Vladimir A Rogov ,
Ella M Moroz ,
Vladimir I Zaikovskii ,
Arcady Ishchenko  and
Oleg F Bobrenok
...Show all authors
Vladislav A Sadykov
Affiliation:
[email protected], Boreskov Institute of Catalysis, Heterogeneous catalysis, pr. Lavrentieva, 5, Novosibirsk, 630090, Russian Federation
Natalia V Mezentseva
Affiliation:
[email protected], Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
Rimma v Bunina
Affiliation:
[email protected], Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
Galina M Alikina
Affiliation:
[email protected], Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
Anton I Lukashevich
Affiliation:
[email protected], Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
Vladimir A Rogov
Affiliation:
[email protected], Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
Ella M Moroz
Affiliation:
[email protected], Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
Vladimir I Zaikovskii
Affiliation:
[email protected], Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
Arcady Ishchenko
Affiliation:
[email protected], Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
Oleg F Bobrenok
Affiliation:
[email protected], Institute of Thermophysics SB RAS, Novosibirsk, 630090, Russian Federation
Alevtina Smirnova
Affiliation:
[email protected], University of Connecticut, Storrs, CT, 06269, United States
John Irvine
Affiliation:
[email protected], University of St Andrews, Fife, KY169ST, United Kingdom
Oleksandr Vasylyev
Affiliation:
[email protected], Institute for Problems of Materials Science, Kyiv, 03142, Ukraine
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Abstract

Effect of fluorite-like or perovskite-like complex oxide promoters and Pd on the performance of Ni/YSZ and Ni/ScSZ cermets in methane steam reforming or selective oxidation by O2 into syngas at short contact times was studied. Spatial uniformity of dopants distribution in composites was controlled by TEM combined with EDX, while the lattice oxygen mobility and reactivity was elucidated by CH4 and H2 TPR. Oxide promoters allow to operate even at stoichiometric H2O/CH4 ratio by suppressing coke deposition through modification of Ni surface, while doping by Pd ensures reasonable performance at moderate (∼550 °C) temperatures required for Intermediate–Temperature Solid Oxide Fuel Cells (IT SOFC).

Keywords

transmission electron microscopy (TEM)catalyticcomposite
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 972: Symposium AA – Solid-State Ionics—2006 , 2006 , 0972-AA03-06
Copyright
Copyright © Materials Research Society 2007

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