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Fuel type and fuel/aluminium nitrate molar ratio proved to be of great importance during the preparation of α-Al2O3 powders. A stoichiometric amount of urea (U) enabled the formation of α-Al2O3 with a surface area of 24 m2/g directly from the combustion reaction. Monoethanolamine, triethylenetetramine, trishydroxymethylaminomethane, and triethanolamine yield amorphous powders. This behaviour was explained...
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