Effect of Some Additives on the Specific Surface of Alumina Obtained from Aluminum-Ammonium Alum |
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| Authors: | B I Bogdanov Iv Chomakov Y Iliev P Tanev |
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| Affiliation: | Department of Silicates, Higher Institute of Chemical Technology. Bourgas 8010, Bulgaria |
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| Abstract: | The effect of Al(NO3)3·9H2O, AlCl3·6H2O, Al(CH3COO)3, and NH4F on the specific surface of Al2O3 obtained from aluminum-ammonium alum by calcining was studied. It was found that the use of these additives makes it possible to obtain Al2O3 with specific surface varying from 1 to 135 m2/g after thermal treatment in the interval from 1273 to 1423 K. The changes in the morphology and structure of powederd Al2O3 obtained from alum containing these additives were studied by electron microscope observations. |
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