过渡金属/分子筛催化剂上选择性催化还原氮氧化物的研究进展  

Research advances in selective catalytic reduction of NO_x over transition metal-based zeolite catalysts

作　　者：姜建清[1] 潘华[2] 孙国金[1] 邵振华[1] 施耀[1] 

机构地区：[1]浙江大学工业生态与环境研究所,浙江杭州310028 [2]西安交通大学环境科学与工程系,陕西西安710049

出　　处：《化工进展》2012年第1期98-106,共9页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金青年基金(21006093);浙江省重点创新团队"大气污染控制创新团队"(2009R50048)项目

摘　　要：综述了近十年来过渡金属/分子筛催化剂上氨和碳氢化合物选择性催化还原NOx方面的研究进展。在NH3-SCR体系,着重介绍了铜基和铁基分子筛催化剂的研究状况,探讨了分子筛催化剂在该体系中的失活原因;在HC-SCR体系,总结了不同过渡金属、分子筛类型、还原剂、H2O和SO2等对催化剂活性的影响,探讨了目前比较公认的碳氢化合物选择性催化还原NOx的反应机理。最后展望了分子筛催化剂在选择性催化还原NOx领域今后的研究方向。A general review is given over the research advances in SCR of NOx with ammonia or hydrocarbons over transition metal-based zeolite catalysts in last 10 years.In NH3-SCR system,Cu and Fe based zeolite catalysts are particularly addressed,the deactivation reasons of these catalysts is discussed as well.In HC-SCR system,the effects of different metals,zeolite types,reducing agents,water vapor,sulfur dioxide on the activity of catalysts are summarized,and the well accepted reaction mechanism of HC-SCR is introduced.The future research directions for SCR over zeolite-based catalyst are also included.

关 键 词：氮氧化物 选择性催化还原 过渡金属 分子筛催化剂 

分 类 号：X701[环境科学与工程—环境工程]