Catalytic partial oxidation of hydrocarbon fuels: Structural characterization of Ni-substituted hexaaluminate catalysts

Conference · Wed Aug 01 04:00:00 EDT 2007

OSTI ID:916939

Gardner, T H; Shekhawat, D; Berry, D A; Campos, A; Roy, A D; Smith, M W; Haynes, D; Kugler, E L; Spivey, J J

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)
• OSTI ID: 916939
• Report Number(s): DOE/NETL-IR-2007-190
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ALKANES
ALUMINIUM OXIDES
BARIUM OXIDES
CATALYSTS
CATALYTIC EFFECTS
METHANE
MOLECULAR STRUCTURE
NICKEL OXIDES
PARTIAL OXIDATION PROCESSES