Accession Number : ADA140233

Title :   Surface Chemistry of Nio (100).

Descriptive Note : Master's thesis,


Personal Author(s) : Furstenau,R P

PDF Url : ADA140233

Report Date : Jan 1984

Pagination or Media Count : 141

Abstract : The hydrogen reduction process of NiO (100) was studied in detail using Auger Electron Spectroscopy (AES), X-ray Photoelectron Spectroscopy (XPS), and Low Energy Electron Diffraction (LEED). The data indicate that the reduction process is strongly temperature dependent. Although the surface lattice loses oxygen in the reduction process, the basic structure of the lattice remains the same. A model is proposed which describes the stoichiometric and reduced NiO (100) surface layers which gives good correlation with the observed data. In addition, the adsorption properties of ethylene on stoichiometric and reduced NiO (100) were also studied. The data indicate that although the surface of the reduced sample is mostly nickel, it does not adopt the adsorption properties of pure nickel metal. A model is also proposed which describes how the reduced NiO (100) surface accommodates the adsorption of ethylene molecules.

Descriptors :   *Surface chemistry, *Nickel compounds, *Oxides, Hydrogen, Reduction(Chemistry), Auger electron spectroscopy, X ray photoelectron spectroscopy, Electron diffraction, Temperature, Crystal lattices, Models, Stoichiometry, Layers, Adsorption, Ethylene, Dissociation

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE