Aiming at the problem of Hg0 removal from the flue gas of coal-fired power plant, the catalysts of mercury oxidation and catalytic mechanisms are summarized in this work.The catalytic oxidation performance of carbon-based materials, metals and metal oxides and selective catalytic reduction (SCR) catalysts are reviewed.The influence of active component, flue gas condition on mercury oxidation performance of catalysts is briefly discussed.Heterogeneous reaction is an important way of promoting the oxidation of elemental mercury.The oxidation mechanisms varied with catalysts or atmosphere.Finally, taking into consideration the situation of coal-fired power plants in China, future research directions including developing effective and stable SCR catalysts with a low SO2/SO3 conversion rate are proposed.The mechanism of Hg0 oxidation need to be better understood as well.%针对燃煤电厂烟气中汞的脱除问题,综述了单质汞氧化催化剂与催化氧化机理的研究现状;着重阐述了碳基、金属及金属氧化物催化剂和选择性催化还原(SCR)催化剂对单质汞的催化氧化性能,分析了活性组分、烟气条件等对各催化剂氧化单质汞性能的影响;指出异相反应是单质汞氧化的重要途径,不同催化剂、不同烟气气氛下氧化机理不同;最后结合我国燃煤电厂的现状,提出深入研究单质汞的催化氧化机理,进一步提高SCR催化剂的催化氧化单质汞活性、抗硫性及稳定性将是燃煤烟气汞污染控制技术的重点发展方向.
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