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EXAFS investigations of Ni/gamma-Al2O3 and Ni/AlPO4 catalysts and their precursors

Arunarkavalli, T (1996) EXAFS investigations of Ni/gamma-Al2O3 and Ni/AlPO4 catalysts and their precursors. In: Proceedings of the Indian Academy of Sciences - Chemical Sciences, 108 (1). pp. 27-37.

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Abstract

In-situ EXAFS investigations have been carried out on Ni/gamma-Al2O3 catalysts with different metal loadings and prepared from different precursors. When the calcined precursors are reduced in hydrogen, the proportion of nickel metal formed varies with the nature of the precursor employed; NiAl2O4 is the unreduced product. The metal loading does not have any significant effect on the proportion of metal formed except in the case of the catalyst prepared by wet-impregnation, where appreciable metal is obtained only when the loading is greater than 10wt%. Ni/AlPO4 catalysts do not show the formation of NiAl2O4 and reduction to metal is complate, unlike with the Ni/gamma-Al2O3 catalysts which show only partial reduction to metal.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian academy of sciences.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 28 Apr 2011 04:38
Last Modified: 28 Apr 2011 04:38
URI: http://eprints.iisc.ernet.in/id/eprint/37175

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