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Abstract
Abstract The surface contamination of nanosized powders is a critical factor influencing the overall material properties. For non-oxide ceramics, hydrolysis leads to a surface reactivity close to that of the corresponding oxide. However, the surface behavior of these non-oxide nanostructured ceramics often results in chemical specificities. A thorough investigation of the surface composition and reactivity of a nanostructured aluminum nitride powder, already started in previous papers, is pursued here. The Fourier transform infrared spectrometric study of carbon monoxide, carbon dioxide and acetic acid adsorptions on the activated aluminum nitride surface revealed the presence of Bronsted and Lewis basic sites. Furthermore, the aluminum nitride surface chemical specificity with respect to the γ-alumina surface was demonstrated.
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