Abstract
The dependence on time of the efficiency of microwave assisted digestion of Al2O3 samples with various physico-chemical properties in H2SO4 solution (1 + 1) at a temperature of 170 °C and a pressure of 207 kPa has been investigated. Therefore, the concentrations of Al and that of the impurities in the solutions obtained, as well as the masses of residues after different times have been measured. The efficiency of the dissolution was shown to depend on the specific surface area and on the phase-state of the Al2O3. The time demand for total dissolution of the samples ranged from 0.1 to 7 hours.
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Tatár, E., Varga, I. & Záray, G. Microwave assisted dissolution of aluminium oxide samples. Mikrochim Acta 111, 45–54 (1993). https://doi.org/10.1007/BF01240166
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DOI: https://doi.org/10.1007/BF01240166