蔡良烽论文“HgCl2 Reduction under Low Temperature Selective Catalytic Reduction Atmosphere”被Energy&Fuels (IF：3.021)接收发表（2020.01.16）
发布时间：2020-01-19
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简介：Mercury chloride (HgCl2) was considered as the dominant form of mercury in coal combustion flue gas. Abundant studies were conducted to investigate how to stimulate the oxidation of elemental mercury (Hg0) to form HgCl2 over selective catalytic reduction (SCR) catalysts, which could be easily removed in wet flue gas desulfurization system. However, as the reverse reaction of Hg0 oxidation, the reduction of HgCl2 was rarely studied. In this work, the entire mercury conversion process containing both Hg0 oxidation and HgCl2 reduction was investigated over a low temperature SCR catalyst. Nitric oxide (NO) alone did not inhibit Hg0 oxidation to HgCl2.HgCl2 could not directly react with NO and NH3 to generate Hg0 at low temperature, while could react with reduced species such as hydroxyl on the catalyst surface to produce Hg0. Such knowledge is of fundamental importance in accurate predicting Hg0 conversion efficiency over SCR catalysts and developing efficient Hg0 oxidation technologies.
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