Selective Catalytic Oxidation of Ammonia into Dinitrogen over a Zeolite-Supported Ruthenium Dioxide Catalyst

作者：Heylen Steven; Delcour Nele; Kirschhock Christine E A; Martens Johan A^*

来源：ChemCatChem, 2012, 4(8): 1162-1166.

DOI：10.1002/cctc.201100489

• ammonia
• ruthenium
• oxidation
• supported catalysts
• zeolites

RuO2@Na-Y zeolite is a highly active catalyst for the selective catalytic oxidation of NH3 into N2 at relatively low temperatures. RuO2@Na-Y zeolite achieved the stoichiometric conversion of NH3 into N2 at 175?degrees C in the presence of water vapor and CO2. Increasing the reaction temperature led to the formation of more-oxidized reaction products (N2O, NO, and NO2). This catalyst was successfully operated in a cycling mode with alternating ammonia- and oxygen-containing gas streams. As expected, the catalyst was only poorly efficient in the selective catalytic reduction of ammonia.

• 出版日期2012-8