Abstract
The reaction of SO 2 with CaO particles (size ∼ 4 μm), at temperatures between 100 and 1000°C, in both the presence and absence of O 2 , has been investigated by using gas-phase FTIR spectroscopy of SO 2 . By analyzing the time dependence of the fractional capture of SO 2 up to 1 min at each temperature, it is concluded that diffusion through the product layer is the controlling step for this reaction at all temperatures investigated
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