CeNixOy and CeAlzNixOy solids studied by electron microscopy, XRD, XPS and depth sputtering techniques

Autor:	A. D'huysser, Carole Lamonier, Louise Jalowiecki-Duhamel, Anne Ponchel
Rok vydání:	2000
Předmět:	inorganic chemicals Aluminium oxides Coprecipitation Nickel oxide Inorganic chemistry General Physics and Astronomy chemistry.chemical_element Cerium Nickel chemistry X-ray photoelectron spectroscopy Sputtering Physical and Theoretical Chemistry Solid solution
Zdroj:	Physical Chemistry Chemical Physics. 2:303-312
ISSN:	1463-9084 1463-9076
DOI:	10.1039/a908283b
Popis:	Mixed oxides based on nickel, cerium and aluminum, effective in the catalytic hydrogenation of unsaturated compounds, were prepared by a coprecipitation route and studied by XRD, TEM, XPS and ion sputtering techniques. The CeNixOy mixed oxides (0⩽x⩽1) can be described as a mixture of nickel oxide and ceria modified by the insertion of nickel cations in its lattice. Ion sputtering followed by XPS analysis has been very useful for estimating the size of NiO clusters present in the compounds, too small to be detected by XRD and TEM. Among the different CeNixOy catalysts studied, the CeNi0.5Oy solid presents the highest number of interactions between Ce4+ cations and Ni2+ cations, located either in the solid solution of cerium–nickel and/or at the NiO/CeO2 interface. In the CeAlzNixOy series (0
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dc5c4f44c4519a63ba6f078339a07ac8 https://doi.org/10.1039/a908283b Zobrazit plný text záznamu