摘要
氨气选择性催化还原技术(NH3-SCR)是脱硝技术中的主要技术。综述了氧化铈基催化剂在NH3-SCR反应中的研究进展,分析了不同载体、制备方法以及金属离子的掺杂改性等因素对催化剂活性和抗硫性的影响;对氧化铈基催化剂上NO、NH3的活化机理以及反应机理进行了详细阐述。总结并展望了氧化铈基脱硝催化剂在NH3-SCR反应中的发展方向。
Selective catalytic reduction of NOx with NH3 （NH3-SCR） is the main technology to remove NOx from coal-fired power plants and diesel exhaust. The progress in cerium oxide-based catalysts for NH3-SCR was reviewed. The effects of different supports, preparation methods and doping elements on catalytic activity and sulfur resistance were analyzed. The reaction mechanisms of NH3-SCR and the activation mechanism of NH3 and NO on cerium oxide-based catalysts were discussed in detail. The development trends of cerium oxide-based catalysts for selective catalytic reduction of NOx with NH3 were outlined.
出处
《工业催化》
CAS
2013年第1期6-11,共6页
Industrial Catalysis
基金
中国石油化工集团公司资助项目(308026)
关键词
催化化学
氮氧化物
氨气选择性催化还原
氧化铈
抗硫性
反应机理
catalytic chemistry
nitrogen oxides
NH3 selective catalytic reduction
cerium oxide
sulfur resistance
reaction mechanism
