关键词: 汞, 吸附剂, 吸附, 氧化, 汞, 吸附剂, 吸附, 氧化

Abstract: Developing technologies for mercury control is becoming one of the most important environmental protection issues. Removing mercury from flue gas involves two very important processes：adsorption and oxidation. In this work，the relevant theory of mercury adsorption on adsorbent surface and catalytic oxidation mechanisms of Hg0 were summarized. The adsorption mechanism of mercury was discussed according to the current state of adsorption characteristics of carbon-based and other sorbents. The catalytic oxidation performance of selective catalytic reduction catalysts，carbon-based materials，and metals and metal oxides was reviewed，and the possible reaction mechanisms of each kind of catalyst were discussed. The active sites on adsorbent surface were the key factor in determining absorption efficiency of adsorbents. Heterogeneous reaction was an important way of promoting the oxidation of elemental mercury. There was a close relationship between absorption and oxidation. The oxidation mechanisms varied with catalysts or atmosphere. Finally，future research directions were proposed，involving enhancing the adsorption efficiency of adsorbents by chloride modification，and developing economic and efficient methods of mercury removal with further research on heterogeneous mechanism of mercury.

Key words: Mercury, adsorbent, adsorption, oxidation, mercury, adsorbent, adsorption, oxidation