中文摘要：

在小型固定床实验台上对中孔分子筛（SBA-15）、煤基活性炭（BPL）、不同含水量活性炭、苯酚和苯甲酸改性活性炭进行气态汞的吸附实验。结果表明：相对于中孔而言，微孔更有利于气态汞的吸附。负载羧基样品对气态汞的吸附能力与原始活性炭相比有很大提高。当羧基负载量为28．89mg羧基／g活性炭时，样品对气态汞的吸附性能达到最佳；经酚羟基改性样品，其对气态汞的吸附能力显著降低，当达到吸附饱和时，原始活性炭的吸附量为306．55μg／g，而酚羟基改性样品最大吸附容量为133μg／g，且负载量与气态汞吸附量呈负相关，由此推测酚羟基对气态汞的吸附没有促进作用，而羧基有利于气态汞的吸附。活性炭表面存在适量水分有利于气态汞的吸附，当样品表面含水率为14．49％时，样品的吸附性能达到最佳。

英文摘要：

A laboratory-scale packed-bed reactor system was used to evaluate the capability of mesoporous molecular sieve（SBA-15）, coal-based activated carbon（BPL）, activated carbons containing different content of moisture, phenol-modified and carboxyl-modified activated carbons for mercury adsorption. The results show that compared to the mesopore structure, micropore structure on the surface of activated carbons is in favor of capturing mercury from carrier gas. The mercury adsorption capacity of carboxyl-modified activated carbons increases significantly compared to that of original carbons. And the best result obtained at the modification ratio of 28.89 mg carboxyl groups /g activated carbon. While the capacity of phenol-modified activated carbons for mercury adsorption decreases remarkably. When reaches saturation, the mercury adsorption capacity of original activated carbons is 306.55μg/g, while the highest capacity of phenol-loaded activated carbons is 133.1 μg/g, and there is a positive relation between the amounts of phenol or carboxyl and mercury adsorption. It suggests that the phenol groups may have no effect on mercury adsorption, while the carboxyl groups are beneficial to the mercury adsorption. The presence of moisture on the surface of activated carbons can enhance their mercury adsorption capacities, and when the moisture content is 14.49%, the adsorption capacity reaches the best result.