Selective catalytic reduction of NO over supported silver catalysts--practical and mechanistic aspects.
Selective catalytic reduction of NO over supported silver catalysts--practical and mechanistic aspects.
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DOI：
10.1039/b601794k
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发表时间：
2006-06
期刊：
影响因子：
--
通讯作者：
K. Shimizu;A. Satsuma
中科院分区：
文献类型：
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作者：
K. Shimizu;A. Satsuma
碳氢化合物选择性催化还原 NO (HC-SCR) 是去除含过量氧气废气（例如柴油机和稀燃汽油发动机）中 NO 的有前途的技术之一。负载型银催化剂，尤其是 Ag/Al2O3，被认为是用于柴油机尾气处理的有希望的候选者，几份发动机台架测试报告证实了这一点。负载型Ag催化剂的HC-SCR性能对反应条件非常敏感，特别是碳氢化合物的类型和H2的添加。反应条件的控制是实际应用的关键。从实际应用和反应机理的角度，即反应方案、表面吸附物种的作用和活性银物种的结构等角度，综述了负载型银催化剂的当前研究。
Selective catalytic reduction of NO by hydrocarbons (HC-SCR) is one of the promising technologies for removal of NO in exhausts containing excess oxygen, such as diesel and lean burn gasoline engines. Supported Ag catalysts, especially Ag/Al2O3, are thought to be the promising candidates for use in diesel exhausts, as confirmed by several reports on engine bench tests. The HC-SCR performance of supported Ag catalysts is very sensitive to the reaction conditions, especially the type of hydrocarbons and the addition of H2. The control of reaction conditions would be key for practical use. The current research of supported Ag catalysts is reviewed from the viewpoints of practical use and the reaction mechanism, i.e., the reaction scheme, the role of surface adsorbed species, and the structure of active Ag species.