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

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Molina, R. Poncelet, Georges [UCL]

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.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès restreint
Publication date 1999
Language Anglais
Journal information "The Journal of Physical Chemistry Part B: Materials, Surfaces, Interfaces & Biophysical" - Vol. 103, no. 51, p. 11290-11296 (1999)
Peer reviewed yes
Publisher Amer Chemical Soc (Washington)
issn 1089-5647
Publication status Publié
Affiliation UCL - AGRO/CABI - Département de chimie appliquée et des bio-industries
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Bibliographic reference Molina, R. ; Poncelet, Georges. alpha-alumina-supported nickel catalysts prepared with nickel acetylacetonate. 2. A study of the thermolysis of the metal precursor. In: The Journal of Physical Chemistry Part B: Materials, Surfaces, Interfaces & Biophysical, Vol. 103, no. 51, p. 11290-11296 (1999)
Permanent URL http://hdl.handle.net/2078.1/43791