用傅里叶变换漫反射红外光谱法研究了原位合成的不同硅铝比的Cu-ZSM-5/堇青石整体式催化剂上一氧化氮的吸附态,以及温度和一氧化氮浓度对吸附态的影响.结果表明,铜在整体式催化剂中主要以二价铜离子的形式存在,未发现一氧化氮在一价铜离子上的特征吸收峰;由二价铜的一氧化氮吸附物种衍生的Cu2+(O)(NO)是与活性密切相关的物种.探讨了NO分解可能的反应机理.
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