Formation of chlorinated species through reaction of SO2 with NaClO 2 powder and their role in the oxidation of NO and Hg 0
2014
Byun, Youngchul | Hamilton, Ian P. | Tu, Xin | Shin, Dong Nam
This study examines gaseous chlorinated species generated from the reaction of sulfur dioxide (SO₂) with sodium chlorite powder (NaClO₂₍ₛ₎) to obtain insight into the propensity of this process to enhance NO and Hg⁰oxidation. A packed bed reactor containing NaClO₂₍ₛ₎was used and the reaction temperature was set to 130 °C. Initially, we determined that the presence of SO₂enhances the oxidation of NO and Hg⁰by reaction with NaClO₂₍ₛ₎. We then introduced NO₂into the gas mixture as a radical scavenger and determined that the chlorinated species generated by the reaction of SO₂with NaClO₂₍ₛ₎are OClO, Cl, ClO, and Cl₂. Based on these results, we suggest that such gaseous chlorinated ones are responsible for the enhancement of NO and Hg⁰oxidation.
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