中文摘要：

研究了活性焦（AC）及负载MnO2的活性焦（MnO2/AC）对气态Hg0的吸附脱除,发现负载MnO2到AC明显提高了其对Hg0的吸附脱除能力.考察了MnO2负载量、温度、Hg0浓度和烟气成分等对MnO2/AC吸附脱除Hg0的影响.结果表明,MnO2/AC对Hg0的吸附脱除能力随MnO2负载量的增加而增强;在120～200℃的温度范围内,随着温度升高,MnO2/AC对Hg0的吸附脱除能力增强;O2和HCl对MnO2/AC吸附脱除Hg0具有促进作用,而SO2和H2O具有抑制作用.SEM-EDX和逐级化学提取结果证实,MnO2将Hg0催化氧化为HgO并吸附在AC上,这是MnO2/AC具有较高的吸附脱除Hg0能力的原因.

英文摘要：

Gas-phase Hg0 removal by an activated coke（AC） and an activated coke-supported MnO2 catalyst（MnO2/AC） were studied.The influences of MnO2 loading,temperature,inlet Hg0 concentration and flue gas components on Hg0 removal were characterized.It was found that MnO2/AC had a much higher Hg0 removal capability than AC,which can be attributed to the oxidation activity of MnO2.The capability increased with an increase of MnO2 loading in the range of 1%~10%,and it was promoted by O2 and HCl but inhibited by SO2 and H2O.In the stack temperature range（120~200 ℃）,MnO2/AC showed high activity for Hg0 removal.Scanning electron microscope-energy dispersive X-ray analysis（SEM-EDX） and sequential chemical extraction experiments confirmed that Hg0 can be oxidized by MnO2 to form HgO and subsequently adsorbed on AC,leading to the high capability of MnO2/AC for Hg0 removal.