Design of Anode Materials for IT SOFC: Effect of Complex Oxide Promoters and Pt Group Metals on Activity and Stability in Methane Steam Reforming of Ni/YSZ (ScSZ) Cermets
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Conference |
5th International Conference on Fuel Cell Science, Engineering and Technology
18-20 Jun 2007
,
New York
|
| Journal |
Journal of Fuel Cell Science and Technology
ISSN: 1550-624X
, E-ISSN: 1551-6989
|
| Output data |
Year: 2010,
Volume: 7,
Number: 1,
Article number
: 011005,
Pages count
: 6
DOI:
10.1115/1.3117255
|
| Tags |
CH4 TPR, Lattice oxygen reactivity, Methane steam reforming, Ni/8YSZ and Ni/ScCeSZ, Pd, Perovskite and fluoritelike oxide promoters, Pt, Ru, SOFC composite anodes |
| Authors |
Sadykov Vladislav A.
1
,
Mezentseva Natalia V.
1
,
Bunina Rimma V.
1
,
Alikina Galina M.
1
,
Lukashevich Anton I.
1
,
Zaikovskii Vladimir I.
1
,
Bobrenok Oleg F.
2
,
Irvine John
3
,
Vasylyev Oleksandr D.
4
,
Smirnova Alevtina L.
5
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, SB RAS, Novosibirsk 630090, Russia
|
| 2 |
Institute of Thermophysics, SB RAS, Novosibirsk 630090, Russia
|
| 3 |
School of Chemistry, University of St. Andrews, KY16 9AJ, Scotland, UK
|
| 4 |
Frantcevych Institute for Problems of Materials Science, Kyiv 03680, Ukraine
|
| 5 |
University of Connecticut, Storrs, CT 06269
|
|
Funding (4)
|
1
|
European Commission
|
20089 FP6-2004-ENERGY-3 SOFC600
|
|
2
|
Президиум СО РАН
|
95
|
|
3
|
North Atlantic Treaty Organization
|
SfP-980878
|
|
4
|
International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union
|
YSF 06-1000014-5773
|
Ni/YSZ or Ni/ScCeSZ cermets were promoted by up to 10 wt % of fluoritelike (Pr–Ce–Zr–О, La–Ce–Zr–О, and Ce–Zr–О) or perovskitelike (La–Pr–Mn–Cr–O) oxides and small (up to 1.4 wt %) amounts of Pt group metals (Pd, Pt, or Ru). Reactivity of samples, their lattice oxygen mobility, and their ability to activate methane were characterized by temperature-programed reduction by CH4. The catalytic properties of these samples in methane steam reforming were studied at 500–850°C and short contact times (10 ms) in feeds with 8 mol % of CH4 and steam/methane ratio of 1:3. Oxide promoters ensure stable performance of cermets in stoichiometric feeds at T>650°C by suppressing carbon deposition. Copromotion with precious metals enhances performance in the intermediate temperature (450–600°C) range due to more efficient activation of methane. Factors determining specificity of these cermet materials’ performance (chemical composition, microstructure, oxygen mobility in oxides, interaction between components, and reaction media effect) are considered. The most promising systems for practical application are Pt/Pr–Ce–Zr–O/Ni/YSZ and Ru/La–Pr–Mn–Cr–O/Ni/YSZ cermets demonstrating a high performance in the intermediate temperature range under broad variation in steam/CH4 ratio