Curve Fitting Analysis of ESCA Ni 2p Spectra of Nickel-Oxygen Compounds and Ni/Al 2 O 3 Catalysts

1984/11/01 by Chung Ping Li, Andrew Proctor, David M. Hercules · 1 citation
Materials Science · Physics and Astronomy · #Electron and X-Ray Spectroscopy Techniques #Machine Learning in Materials Science #X-ray Spectroscopy and Fluorescence Analysis

paper · doi:10.1366/0003702844554530

openalex publication_date 1984/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

Nonlinear least-squares curve fitting is used to analyze Ni 2p spectra obtained from various nickel-oxygen compounds and Ni/Al 2 O 3 catalysts. Apart from NiO, which shows a characteristic discrete satellite peak 2 eV from the main 2p 3/2 peak, all other spectra exhibit variable peak asymmetry assigned to multiplet splitting effects. By the use of a single extra peak to describe this asymmetry, the relative satellite/main peak intensity ratio can be used as an indication of the chemical state of nickel. Results for Ni/Al 2 O 3 catalysts agree with reduction studies from previous work about the nature of nickel species on the surfaces of these catalysts at various nickel loadings.

Citations

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