Transition-metal-containing zeolites have wide-ranging applications in several catalytic processes including the selective catalytic reduction (SCR) of NO_x species. To understand how transition metal ions (TMIs) can effect NO_x reduction chemistry, both structural and mechanistic aspects at the atomic level are needed. In this review, we discuss the coordination chemistry of TMIs and their mobility within the zeolite framework, the reactivity of active sites, and the mechanisms and intermediates in the NH₃-SCR reaction. We emphasise the key relationship between TMI coordination and structure and mechanism and discuss approaches to enhancing catalytic activity via structural modifications.

中文翻译：

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了解过渡金属交换分子筛中的 deNOx 机制


含过渡金属的沸石在多种催化过程中具有广泛的应用，包括 NO_x 物种的选择性催化还原 （SCR）。要了解过渡金属离子 （TMI） 如何影响 NO_x 还原化学，需要原子水平的结构和机理方面。在这篇综述中，我们讨论了 TMI 的配位化学及其在沸石框架内的迁移率、活性位点的反应性以及 NH_3-SCR 反应中的机制和中间体。我们强调了 TMI 配位与结构和机制之间的关键关系，并讨论了通过结构修饰增强催化活性的方法。