The Effect of Promoters and Additives on Removing SO₂ at TiO₂ Catalyst with Plasma

抄録

With more stringent environmental regulations or acts being implemented, the research on developing a desulfurization/denitrification technology with high efficiency and cost performance becomes very urgent. In this paper, TiO₂ catalyst with the addition of different promoters and additives were tested in a laboratory scale plasma reactor. Promoters are V₂O₅ and K₂O–V₂O₅, and additives are H₂O and H₂O₂, respectively. The experimental results indicate that the promoters (V₂O₅ and K₂O–V₂O₅) are considerably effective in promoting the activity of TiO₂ catalyst in the presence of plasma, which causes the SO₂ oxidation rate to increase. Meanwhile, K₂O–V₂O₅ (K-promoter) is found to be a better promoter than V₂O₅. Except for promoters, the additives (H₂O, H₂O₂) also have an important impact on SO₂ oxidation in the case of simultaneously using plasma and TiO₂ catalyst.