中文摘要：

卤素改性材料对烟气中单质汞的去除具有较高的效率,黏土（膨润土）在我国分布广,资源丰富且廉价易得.为探究KI改性黏土对烟气中单质汞的脱除效率,以浸渍法制得了KI改性膨润土,研究了不同KI负载量、不同吸附温度及不同烟气氛围下,改性膨润土对Hg^0的脱除效率和累积吸附量,并与原始膨润土进行对比.运用比表面分析（BET）、傅里叶红外光谱仪（FTIR）及热重分析法（TGA）等方法对材料的物理化学特性进行了分析.结果表明,KI改性大大提升膨润土对Hg^0的脱除效率,并且Hg0的脱除效率随着KI负载量的加大而上升.温度提高了吸附剂吸附Hg^0的性质,吸附剂主要表现为化学吸附.O2有利于吸附剂对Hg^0的吸附.SO2对吸附剂吸附Hg0有轻微的促进作用,H2O的存在对吸附剂吸附Hg0具有很强的抑制作用.

英文摘要：

Adsorption tests of elemental mercury were carried out by using KI modified clay（bentonite） in simulated flue gas under different conditions. Brunauer-Emett-Teller measurement（BET）, Fourier Transform Infraredspectroscopy（FTIR） and Thermogravimetric Analysis（TGA） were used to analyze the physical and chemical properties of the materials. Compared with the original bentonite,Hg^0 removal efficiency and Hg^0 adsorption capacity were drastically improved by the KI treatment. The experiment results also indicated that temperature could enhance the property of Hg^0 adsorption. Chemical adsorption was the dominant part in the process of Hg^0 adsorption. O2 was a beneficial factor for Hg^0 adsorption. SO2 was found to have a slight promotional effect on Hg^0 adsorption. The existence of H2 O exhibited a dramatic inhibitory effect on Hg^0 adsorption.