alpha-alumina-supported nickel catalysts prepared with nickel acetylacetonate. 2. A study of the thermolysis of the metal precursor

Molina, R.;Poncelet, Georges
(1999) The Journal of Physical Chemistry Part B: Materials, Surfaces, Interfaces & Biophysical — Vol. 103, n° 51, p. 11290-11296 (1999)

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  • Molina, R.
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  • Poncelet, GeorgesUCLouvain
    Author
Abstract
The thermolysis of nickel acetylacetonate supported on alpha-alumina has been investigated by thermal methods (TGA-DTG-DTA), infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). At 250 degrees C and in static air atmosphere, decomposition of the metal ligands is nearly complete. Higher temperatures are needed in an inert atmosphere or in a vacuum. The variation of XPS peak parameters of samples heated at various temperatures between 120 and 900 degrees C has been interpreted as a change of the distribution of the Ni species between the octahedral and tetrahedral aluminum sites of the support, and a progressive formation of a nickel aluminate-like species, in agreement with temperature-programmed reduction features.
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Molina, R., & Poncelet, G. (1999). alpha-alumina-supported nickel catalysts prepared with nickel acetylacetonate. 2. A study of the thermolysis of the metal precursor. The Journal of Physical Chemistry Part B: Materials, Surfaces, Interfaces & Biophysical, 103(51), 11290-11296. https://doi.org/10.1021/jp9907286 (Original work published 1999)