Oxidation of nitric oxide to nitrogen dioxide over Ru catalysts

Catalytic oxidation of NO over TiO2 supported platinum clusters I. Preparation, characterization and catalytic properties

“…Meanwhile, no diffraction peaks corresponding to supported platinum species can be observed. A large proportion of anatase in pure TiO 2 P25 ($70%) can be transformed to rutile phase during thermal treatment at 750 8C [23], while in this work the phase transformation is greatly suppressed by the addition of platinum.…”

Characterization and Catalytic Activity of Mn-Co/TiO2 Catalysts for NO Oxidation to NO2 at Low Temperature

“…The light-off temperature in the NO oxidation to NO 2 is significant for the low-temperature SCR of NO x reduction. Therefore the research into NO oxidation catalysts is important for the NO x removal and various catalysts have been researched, including the supported noble metals [3][4][5][6] and other metal oxides [7][8][9].…”

Catalytic Oxidation of Nitric Oxide to Nitrogen Dioxide on Ru-FAU

“…The reduction peaks at below 250°C should be ascribed to the reduction of different types of Ru oxides since the support materials cannot be reduced within this temperature range. For Ru-USY, two reduction peaks at 100°C and 130°C are observed, which can be ascribed to the reduction of highly dispersed amorphous RuO 2 and bulk amorphous RuO 2 [19,20], respectively. As for RuNaY, the reduction of highly dispersed amorphous RuO 2 and bulk amorphous are observed at higher temperature than that on Ru-USY, e.g., at 120°C and 155°C, respectively.…”

“…At above 250°C, the NO conversion dropped gradually along the thermodynamic equilibrium. It should be noted that the NO oxidation activity of Ru-REY is obtained at a very high WHSV of 180,000 mL/g cat h and the activity is higher than that on other supported ruthenium catalysts, e.g., Ru-TiO 2 [20]. The activity of Ru-REY is also much higher than that on Pt/Al 2 O 3 model catalyst (pre-reduced) for NO oxidation under similar conditions, as shown in Fig.…”