Copper ion-exchanged zeolite catalysts in deNOx reaction
Copper ion-exchanged zeolite catalysts in deNOx reaction
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DOI：
10.1016/s0926-860x(01)00823-7
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发表时间：
2001-12
影响因子：
5.5
通讯作者：
H. Yahiro;M. Iwamoto
中科院分区：
文献类型：
--
作者：
H. Yahiro;M. Iwamoto
铜离子交换沸石作为控制NOx排放的催化剂已被广泛研究。Cu-MFI分子筛，特别是过交换Cu-MFI分子筛，对NO的催化分解具有很高的活性。介绍了近年来发展起来的富氧条件下碳氢化合物选择性催化还原NO的新方法。讨论了氧的作用和沸石催化剂的失活。最后一章对铜分子筛对NO的高效吸附性能进行了综述。本文还介绍了NO和NO2分子在沸石中的成键和分子扩散的一些基本情况。
Copper ion-exchanged zeolites have widely been studied as the catalysts for NOxemission control. Cu-MFI zeolites, especially over-exchanged Cu-MFI, are very active for the catalytic decomposition of NO. The reaction mechanisms and the active sites suggested are summarized. The newly developed selective catalytic reduction of NO with hydrocarbons in the presence of excess oxygen is then introduced. The role of oxygen and the deactivation of the zeolite catalysts are discussed. In the last chapter, the high ability of Cu-zeolites for NO adsorption is overviewed. Here, some fundamental aspects of the bonding and the molecular diffusion of NO or NO2molecules in zeolites are also summarized.