Chemical reactivity of alkaline earth oxide thin films

Conference · Tue Oct 01 00:00:00 EDT 1996

OSTI ID:370136

Kizhakavariam, N; Gallagher, M; Cowin, P ^[1]

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1. Environmental Molecular Sciences Lab., Richland, WA (United States)

Adsorption and reaction at mineral surfaces play a crucial role in many environmental processes. Thin films of oxides over refractory metal susbstrates are model systems, providing us with unique opportunities in exploring some fundamental issues in the chemical reactivity of mineral surfaces. Thin films of magnesium oxide, calcium oxides, and mixed oxides of calcium and magnesium on molybdenum have been prepared. The reactivity of the films were examined with temperature programmed desorption of water and isotope labelling experiments. The links between chemical properties and structural properties were explored with scanning tunneling microscopy and low energy electron diffraction. Implications to mineral surface chemistry will be discussed.

• OSTI ID: 370136
• Report Number(s): CONF-960376--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ADSORPTION
CALCIUM OXIDES
CHEMICAL PROPERTIES
CRYSTAL STRUCTURE
DESORPTION
ELECTRON DIFFRACTION
FILMS
MAGNESIUM OXIDES
MINERALS
MOLYBDENUM
SURFACE PROPERTIES
SURFACES
THIN FILMS
WATER