尽管C2H5OH和CH3OCH3是同分异构体,但在以Ag/Al2O3为催化剂选择性催化还原NOx时,还原剂C2H5OH比CH3OCH3具有更高的活性. 原位漫反射红外光谱研究表明, C2H5OH和CH3OCH3在还原NOx反应过程中分别遵循不同的反应机理: 在Ag/Al2O3催化C2H5OH还原剂选择性还原NOx的反应过程中,烯醇式物种(RCH = CH - O-)和NO-3物种是主要的反应中间体,二者相互反应性能很强,可以生成反应
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