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

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Conference Proceeding

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Transition metals dispersed in barium hexaaluminate have been shown to be promising new partial oxidation catalysts. In this investigation, a series of BaNi Al O catalysts with varying Ni content were prepared by co-precipitation followed by calcination at high temperature at 1400°C. The partial oxidation of CH and n-tetradecane was carried out in separate experiments to examine the relationship between Ni substitution and (a) activity/selectivity toward CO + H and (b) the structure of the hexaaluminate. EXAFS analysis of three samples (y = 0.2, 0.6, and 1.0 in BaNi Al O ) 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. y 12-y 19-σ 4 2 y 12-y 19-σ

Publication Source (Journal or Book title)

ACS National Meeting Book of Abstracts

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