High surface area NiO-MgO solid solutions of various nickel content (1 to 5 atomic percent) were studied as prepared and after exposure to nitrogen dioxide by X-ray éhotoelectron Spectroscopy (XPS) and Electron Spin Resonance (ESR). The formation and the stabilitynof Ni3+ species were investigated. The results obtained by the two techniques on the same specimens were compared, and the formation of Ni3+ in the outer layers was deduced. A quantitative assessment is also given.
"XPS and ESR study of nickel valency states in NiO-MgO high surface area solid solutions" / A., Cimino; Gazzoli, Delia; V., Indovina; M., Inversi; Moretti, Giuliano; Occhiuzzi, Manlio. - STAMPA. - 48:(1989), pp. 279-288.
"XPS and ESR study of nickel valency states in NiO-MgO high surface area solid solutions"
GAZZOLI, DELIA;MORETTI, GIULIANO;OCCHIUZZI, Manlio
1989
Abstract
High surface area NiO-MgO solid solutions of various nickel content (1 to 5 atomic percent) were studied as prepared and after exposure to nitrogen dioxide by X-ray éhotoelectron Spectroscopy (XPS) and Electron Spin Resonance (ESR). The formation and the stabilitynof Ni3+ species were investigated. The results obtained by the two techniques on the same specimens were compared, and the formation of Ni3+ in the outer layers was deduced. A quantitative assessment is also given.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
