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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.49A [2010] >
IJC-A Vol.49A(04) [April 2010] >
| Title: | CuO, K2O and V2O5 supported on ceria-titania: Synthesis, characterization and application for diesel soot combustion |
| Authors: | Raj, K Joseph Antony
Viswanathan, B |
| Keywords: | Diesel soot oxidation
Catalytic combustion
Ceria
Titania
Mixed oxides
Catalysts |
| Issue Date: | Apr-2010 |
| Publisher: | CSIR |
| IPC Code: | Int. Cl.9 B01J21/00 |
| Abstract: | Diesel
soot oxidation with CuO/V2O5/K2O/CeO2-TiO2 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 % K2O 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
K2O 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 K2O, 7.5 wt. % of V2O5 and 2 wt.% of CuO
exhibits complete combustion at Tmax = 427 °C. |
| Page(s): | 401-406 |
| Source: | IJC-A Vol.49A(04) [April 2010]
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