Please use this identifier to cite or link to this item:
|Title:||CuO, K<sub>2</sub>O and V<sub>2</sub>O<sub>5</sub> supported on ceria-titania: Synthesis, characterization and application for diesel soot combustion|
|Authors:||Raj, K Joseph Antony|
|Keywords:||Diesel soot oxidation|
|Series/Report no.:||Int. Cl.<sup>9</sup> B01J21/00|
|Abstract:||Diesel soot oxidation with CuO/V<sub>2</sub>O<sub>5</sub>/K<sub>2</sub>O/CeO<sub>2</sub>-TiO<sub>2</sub> catalyst samples has been studied. Mixtures of the catalyst with diesel soot lower the oxidation temperature from 601 to 427°C. TG/DTA studies of soot oxidation show that K-Cu-V modification improves the low temperature activity in air. Sample B with 12.5 % K<sub>2</sub>O has been found to be most active with peak activity at 427 °C. The activity further improved on incorporation of K-Cu-V, due to the mobility of potassium on melting. Chemical interactions between the K<sub>2</sub>O and titania result in formation of potassium titanate. In addition, the XRD patterns obtained for samples C and D loaded with higher concentrations of potassium show the formation of solid solutions with the oxides of Ce, K and V. Nevertheless, the variation of potassium content has a limited effect on soot ignition temperature. The catalyst with 12.5 wt. % of K<sub>2</sub>O, 7.5 wt. % of V<sub>2</sub>O<sub>5</sub> and 2 wt.% of CuO exhibits complete combustion at <i style="">T</i><sub>max</sub><i style=""> </i>= 427 °C.|
|Appears in Collections:||IJC-A Vol.49A(04) [April 2010]|
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.