A role of surface nitrite and nitrate complexes in NOx selective catalytic reduction by hydrocarbons under oxygen excessстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:NO adsorption over three types of catalytic systems, such as cation-exchanged zeolites, transition metal oxides supported on γ-Al2O3, and partially stabilised tetragonal ZrO2 (PSZ) was studied by using the TPD method. NO forms several surface complexes having different desorption temperatures. TPD results compared with catalytic properties of these systems in the selective reduction of NO x by propane under oxygen excess showed that strongly bound nitrites and nitrates appeared to be true intermediates in this reaction.