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Mercury pollution produced by coal combustion has been identified as a severe hazardous pollutant to human health and the environment. For the coal-fired power plants, one of the most cost-effective methods to control mercury is to use SCR catalysts, which can achieve both denitration and oxidation effects, simultaneously. In the present study, a new SCR catalyst, bromine-doped vanadia/titania oxide, has been developed, and its structure and mercury oxidation characteristics were systematically studied. Results demonstrated that, in compare to the control sample, bromine-doped vanadia/titania oxide has obviously higher amount of V4+ and Ti3+, thus resulting in an improved redox property. Activity tests showed that the catalytic capacity was highly dependent on the doping amount of bromine with a specific feature from ‘low to high to low’, The highest value for mercury oxidation of the product is [Br]/[Ti]=1.2×10-2.

The Characterization and Mercury Oxidation Performance of Bromine-Doped Vanadia/Titania Oxide Catalyst