环境工程学报2017，Vol.11Issue(5)：2920-2925,6.DOI:10.12030/j.cjee.201512217
金属卤化盐改性沸石脱汞性能
Removal of mercury using zeolite modified by metal halides
摘要
Abstract
To develop high performance price ratio sorbents or oxidants for coal-fired flue gas demercuration,this study investigated the demercuration efficiencies of metal halides-modified zeolites and their demercuration mechanism.The mercury removal efficiency decreases slightly when alkali metal halides are used to modify the zeolite,while the efficiency is quite high when transition metal halides are used.The mercury removal efficiency increases as the concentration of the modification solution increases.The modification decreases the specific surface area,pore volume,and adsorption capacity simultaneously.However,the functional groups enhance the oxidation and catalytic oxidation.Using transition metal halides-modified zeolite,more than 95％ of Hg0 is oxidized or catalytically oxidized to mercury oxide,and only less than 5％ of Hg0 is adsorbed physically.关键词
金属卤化盐/改性沸石/吸附/汞Key words
metal halide/modified zeolite/adsorption/mercury分类
资源环境引用本文复制引用
孙青柯,黄亚继,秦翠娟,李睦,周军,卢志海..金属卤化盐改性沸石脱汞性能[J].环境工程学报,2017,11(5):2920-2925,6.基金项目
江苏省环保科研课题(2012027) （2012027）
高等学校博士学科点专项科研基金资助项目(20130092110007) （20130092110007）
