Abstract
Different hydration and hydroxylation states of surfaces of highly dispersed magnesium oxide were subjected to a detailed FT-IR spectroscopic analysis using the transmission technique. Thermal desorption and time resolved adsorption studies on a time-scale of seconds enabled a great variety of surface hydroxyl species to be characterized. Additional information on some of these species was obtained by probing the surface with ammonia. Based on data obtained with the aid of modern FT-IR technology the previously published assignment of the NH bending region in the system MgO/NHa was revised. This leads to a new description of the respective surface complexes.
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