Part II of the series dealing with DeNOx carried out on dopper-containing molecular sieves is devoted to the various features responsible for the catalytic activity of Cu-molecular sieves in the NO decomposition. The physico-chemical properties of the catalysts were shown in Part I ("Wiadomości Chemiczne" 2002, 56, 1-2, 83), whereas in Part II they are related to the decomposition of NO. This paper describes the role of the Si/Al and Cu/Al rations, the conditions of the catalysts preparation and activation, the influence of the T-element nature in the framework of molecular sieves as well as co-cations on the yield in the NO decomposition. Moreover, some proposals of the mechanism of this reaction described in the literature are included.
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