Role of propene in the selective reduction of nitrogen monoxide in copper-exchanged zeolites
Role of propene in the selective reduction of nitrogen monoxide in copper-exchanged zeolites
复制标题
DOI：
10.1016/0926-3373(93)80029-d
复制
发表时间：
1993-03
影响因子：
22.1
通讯作者：
R. Burch;P. Millington
中科院分区：
文献类型：
--
作者：
R. Burch;P. Millington
气体切换实验检查反应的前几分钟，已用于研究丙烯在富氧气体混合物中的 Cu-ZSM-5 催化剂上选择性还原一氧化氮。已经发现，一氧化氮向氮气的转化在很短的时间内达到稳态活性。结论是碳沉积并不是一氧化氮转化为氮气的原因。相反，提出碳氢化合物和氧气起到将活性铜位点维持在适合于直接一氧化氮分解的氧化态的作用。
Gas switching experiments, examining the first few minutes of reaction, have been used to study the selective reduction of nitrogen monoxide by propene on a Cu-ZSM-5 catalyst in an oxygen-rich gas mixture. It has been found that the conversion of nitrogen monoxide to nitrogen reaches a steady-state activity in a very short period of time. It is concluded that carbon deposition is not responsible for the conversion of nitrogen monoxide into nitrogen. It is proposed instead that the hydrocarbon and oxygen act to maintain the active copper sites in an oxidation state suitable for direct nitrogen monoxide decomposition.