Abstract
Free radical properties of MgO catalysts obtained by thermal decomposition of Mg(OH)2 in nitrogen, hydrogen and oxygen have been investigated. All the oxides show one-electron donor properties (reduction of adsorbed tetracyanoethylene and trinitrobenzene). Only the MgO calcined in oxygen shows one-electron acceptor properties (oxidation of adsorbed perylene). Acetaldehyde transformations were studied on the above catalysts. The MgO calcined in oxygen appeared to be the most active. Presumably, its activity is due to one-electron acceptor centers on the surface.
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