Abstract
Oxidation of SO 2 – SO 3 has been studied experimentally in laboratory flow reactors. The homogeneous oxidation by O 2 was characterized in the temperature range 1023–1323 K at semi-dry and moist conditions. The reaction was found to be very slow, in agreement with results from literature. The experimental data compared well with modeling predictions using a recently published reaction mechanism for gas-phase SO 2 oxidation. The ability of quartz, alumina and iron oxide to catalyze the SO 2 oxidation was studied in the temperature range 873–1273 K. Quartz was found to be inert to SO 2 oxidation, while alumina promoted the oxidation. Iron oxide was found to be a strong oxidation catalyst, in agreement with results from literature.
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