中文摘要：

制备了Ce掺杂的低矾V2O5-WO3/TiO2催化剂,在模拟燃煤烟气条件下开展Hg0的脱除实验.结果表明该催化剂具有很好的Hg0脱除能力,在200～500℃的温度范围内能脱除烟气中95%的Hg0.催化剂表征结果表明,比表面积、孔容和孔径与汞脱除能力没有显著相关性.XPS的结果表明,催化剂表面的Ce是以Ce4＋的形式存在,有利于Hg0的脱除反应.抗硫抗水实验表明,H2O会轻微抑制Hg0的脱除反应,主要原因是H2O和Hg0在样品表面的竞争吸附;SO2会促进Hg0的脱除反应,原因是SO2能增加样品表面的酸吸附位且增加表面Hg0的吸附量.

英文摘要：

This paper discussed a recent study of mercury removal by gaseous hydrogen chloride over novel Ce doped low vanadium V2O5-WO3/TiO2 catalysts under a bench scale condition.The performances on Hg0 removal over the catalyst were tested in simulated flue gas with 80-100 μg·m-3 Hg0,8% O2,10×10-6 HCl,8% H2O,800×10-6 SO2 and balanced with N2.Results showed that about 95% of Hg0 could be removed.According to the characterization results,BET surface areas had not significant influence on catalytic performance.XPS results indicated that Ce4＋ oxide was a mainly form in the catalysts surface,which was beneficial for Hg0 removal reactions.Water vapor slightly inhibited Hg0 removal efficiency,due to the competitive adsorption,however,SO2 promoted the oxidation reactions,resulting in higher removal efficiencies.