Catalytic partial oxidation of hydrocarbon fuels: Structural characterization of Ni-substituted hexaaluminate catalysts
Transition metals dispersed in barium hexaaluminate have been shown to be promising new partial oxidation catalysts. In this investigation, a series of BaNiyAl12-yO19-δ catalysts with varying Ni content were prepared by co-precipitation followed by calcination at high temperature at 1400°C. The partial oxidation of CH4 and n-tetradecane was carried out in separate experiments to examine the relationship between Ni substitution and (a) activity/selectivity toward CO + H2 and (b) the structure of the hexaaluminate. EXAFS analysis of three samples (y = 0.2, 0.6, and 1.0 in BaNiyAl12-yO19-δ) showed no clear trend in the average Ni coordination number and bond distance with Ni loading. However, the substitution of nickel into the hexaaluminate (increasing y values) significantly reduced the carbon formed onto the surface of the catalyst.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Organization:
- USDOE - Office of Fossil Energy (FE)
- DOE Contract Number:
- None cited
- OSTI ID:
- 916939
- Report Number(s):
- DOE/NETL-IR-2007-190; TRN: US200816%%56
- Resource Relation:
- Conference: 234th American Chemical Society (ACS) National Meeting, Boston, MA, Aug. 19-23, 2007
- Country of Publication:
- United States
- Language:
- English
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