Hexaaluminate catalysts offer excellent high-temperature stability compared to the equivalent metal-based catalysts. Their stability also lends well to use as a catalyst support. However, use of novel hexaaluminates is limited in fuel processing for fuel-cell applications. In this paper, we report on the performance of hexaaluminates as a catalyst support in the steam reforming of methane. The hexaaluminates are synthesized by a metal-exchange process using alumoxane precursors that enable a wide range of metal substitutions. Performance is evaluated using a unique stagnation-flow reactor that enables detailed probing of the boundary layer above the catalyst-impregnated stagnation surface. Experimental results are compared with models to understand fundamental reaction kinetics and optimize catalyst performance. RhSr-substituted hexaaluminates with a Rh impregnation are shown to yield the best performance. Scanning- and Transmission-Electron Microscopy are used to characterize the different types of hexaaluminates, and to examine the effect of aging on catalyst structure.
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ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
June 16–18, 2008
Denver, Colorado, USA
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4318-1
PROCEEDINGS PAPER
Hexaaluminate Catalysts for Fuel Reforming
Nicholas E. McGuire,
Nicholas E. McGuire
Colorado School of Mines, Golden, CO
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Neal P. Sullivan,
Neal P. Sullivan
Colorado School of Mines, Golden, CO
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Robert J. Kee,
Robert J. Kee
Colorado School of Mines, Golden, CO
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Huayang Zhu,
Huayang Zhu
Colorado School of Mines, Golden, CO
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James A. Nabity,
James A. Nabity
TDA Research Inc., Wheat Ridge, CO
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Jeffrey R. Engel,
Jeffrey R. Engel
TDA Research Inc., Wheat Ridge, CO
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David T. Wickham,
David T. Wickham
Reaction Systems LLC, Golden, CO
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Michael Kaufman
Michael Kaufman
Colorado School of Mines, Golden, CO
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Nicholas E. McGuire
Colorado School of Mines, Golden, CO
Neal P. Sullivan
Colorado School of Mines, Golden, CO
Robert J. Kee
Colorado School of Mines, Golden, CO
Huayang Zhu
Colorado School of Mines, Golden, CO
James A. Nabity
TDA Research Inc., Wheat Ridge, CO
Jeffrey R. Engel
TDA Research Inc., Wheat Ridge, CO
David T. Wickham
Reaction Systems LLC, Golden, CO
Michael Kaufman
Colorado School of Mines, Golden, CO
Paper No:
FuelCell2008-65231, pp. 461-468; 8 pages
Published Online:
June 22, 2009
Citation
McGuire, NE, Sullivan, NP, Kee, RJ, Zhu, H, Nabity, JA, Engel, JR, Wickham, DT, & Kaufman, M. "Hexaaluminate Catalysts for Fuel Reforming." Proceedings of the ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. Denver, Colorado, USA. June 16–18, 2008. pp. 461-468. ASME. https://doi.org/10.1115/FuelCell2008-65231
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