活性炭表面含氧官能团对汞吸附的作用  

Effect of Oxygen Functional Groups of Activated Carbon on Mercury Adsorption

作　　者：张璧[1] 罗光前[1] 徐萍[1] 余桥[1] 邱勇[1] 吴辉[1] 姚洪[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,武汉430074

出　　处：《工程热物理学报》2015年第7期1611-1615,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51476066;No.51161140330;No.51006041)

摘　　要：本文对采用不同方法处理后的活性炭进行BET、官能团分析和汞吸附性能实验,研究其表面含氧官能团对汞吸附的作用。结果表明:活性炭表面的酯基与羰基能提高汞的吸附效率,高于100℃时是影响活性炭汞吸附效率的主要因素。物理吸附,羰基与酯基吸附的汞的程序升温脱附温度峰值分别为100,210和320℃。汞在与活性炭表面接触后优先被吸附能高的化学吸附位点吸附,化学吸附饱和后,才会进行物理吸附。Activated carbons were treated by mercury adsorption performances of ACs were different methods to change the functional groups, and tested. The results show that ester and carbonyl func- tional groups can enhance mercury adsorption. Moreover, the results of the temperature programmed desorption experiments indicated that the mercury desorption peak of physical adsorption, carbonyl groups and ester groups should occur at 100℃, 210℃ and 320℃ Physical adsorption.

关 键 词：活性炭 汞 含氧官能团 吸附 程序升温 

分 类 号：TK16[动力工程及工程热物理—热能工程]