Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
53100 | Catalysis Communications | 2007 | 5 Pages |
Abstract
Potassium nitrate catalysts supported on different oxides (CeO2, Ce0.5Zr0.5O2 and ZrO2) were prepared for diesel soot combustion. The ageing treatment was performed at 800 °C for 24 h and the catalytic activity was evaluated by a temperature-programmed oxidation technique. The results demonstrated that, compared with CeO2 and ZrO2, Ce0.5Zr0.5O2 presented good redox properties, a high surface area and available potassium-holding capacity at an elevated temperature. For aged K/Ce0.5Zr0.5O2, the combustion temperature of soot particle was 359 °C under tight contact conditions and 455 °C under loose contact conditions. Thus, ceria–zirconia mixed oxides were considered as good candidate supports for diesel soot oxidation catalysis.
Related Topics
Physical Sciences and Engineering
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Catalysis
Authors
Xiaodong Wu, Dongxu Liu, Kai Li, Jia Li, Duan Weng,