铈基催化剂用于NH3选择性催化还原NOx的研究进展.pdf

物理化学学报(Wuli Huaxue Xuebao)
May Acta Phys. -Chim. Sin. 2015, 31 (5), 817-828 817
[Review] doi: .cn
铈基催化剂用于NH3选择性催化还原NOx的研究进展
姚小江 1,* 贡营涛 1,2 李红丽 1 杨复沫 1,3,*
(1中国科学院重庆绿色智能技术研究院, 水库水环境重点实验室, 重庆 400714;
2重庆工商大学, 催化与功能有机分子重庆市重点实验室, 重庆 400067; 3长江师范学院, 重庆 408100)
摘要: 源自固定源(如燃煤电厂烟气)和移动源(如机动车尾气)排放的氮氧化物(NOx)造成了严重的大气污染,
对其进行减排控制已迫在眉睫. 研究表明, 氨选择性催化还原(NH3-SCR)技术是消除 NOx 的最有效手段之一.
铈基催化剂因其良好的氧化还原性能、适当的表面酸性、较高的储/释氧容量以及丰富的资源储备而被广泛用
于 NH3-SCR 反应. 探讨铈基组分在该反应中发挥的具体作用, 有助于了解相关催化过程的本质, 为现有催化剂
的优化和新型催化剂的设计提供科学参考. 基于 CeO2 在 NH3-SCR 催化剂中扮演的不同角色, 本文从 CeO2 作
为载体、铈基复合氧化物、表面负载组分(助剂和活性组分)以及特殊结构的铈基催化剂等方面系统地介绍了近
年来铈基催化剂在NH3-SCR反应中的最新研究进展, 并对该领域未来可能的发展方向进行了展望.
关键词: 铈基催化剂; 氮氧化物; NH3选择性催化还原; 载体; 复合氧化物; 表面负载组分; 特殊结构
中图分类号: O643
Research Progress of Ceria-Based Catalysts in the Selective
Catalytic Reduction of NOx by NH3
YAO Xiao-Jiang1,* GONG Ying-Tao1,2 LI Hong-Li1 YANG Fu-Mo1,3,*
(1Key Laboratory of Reservoir Aquatic Environment of CAS, Chongqing Institute of Green and Intelligent Technology,
Chinese Academy of Sciences, Chongqing 400714, P. R. China; 2Chongqing Key Laboratory of Catalysis and Functional
Organic Molecules, Chongqing Technology and Business University, Chongqing 400067, P. R. China;
3Yangtze Normal University, Chongqing 408100, P. R. China)
Abstract: Nitrogen oxides (NOx), which are emitted from stationary sources (such as coal-fired power plant
flue gases) and mobile sources (such as motor vehicle exhausts), cause serious atmospheric pollution. As a
result, it is very important to control the emissions of NOx. Some studies have suggested that NH3-selective
catalytic reduction (NH3-SCR) of NOx is one of the best techniques for this purpose. Ceria-based catalysts are
widely used in the NH3-SCR reaction because of their good redox ability, suitable surface acidity, high oxygen
storage or release capacity, and rich resource reserves. Investigating the role of ponent in this reaction
is important to underst