| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 50118 | Catalysis Communications | 2016 | 5 Pages |
•Mesoporous Co3O4, by a soft-template method, lost mesopores at a high temperature.•Co3O4 supported on mesoporous silica showed activity for N2O decomposition.•Co3O4 on mesoporous silica is better than mesoporous Co3O4 for N2O decomposition.•The calcination temperature of Co3O4 on mesoporous silica should be less 550 °C.
Mesoporous Co3O4 (meso-Co3O4) and Co3O4 nanoparticles supported on mesoporous silica SBA-15 (Co/SBA-15) were prepared by hydrothermal synthesis and an impregnation method, respectively. Although the as-prepared meso-Co3O4 had mesopores and a higher surface area comparable to that of Co/SBA-15, its catalytic activity for N2O decomposition was much lower than that of Co3O4/SBA-15. The low catalytic activity of meso-Co3O4 mainly stems from the drastic decrease of the meso-Co3O4 surface area under the reaction condition used. On the other hand, Co/SBA-15 maintained its high surface area and mesopores with the aid of a robust silica support. This finding indicates that Co3O4 supported by a support is much more stable and efficient than meso-Co3O4 under N2O decomposition reaction conditions.
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