| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 41911 | Applied Catalysis A: General | 2010 | 7 Pages |
We present the study on the catalytic performance of gold particles supported on spinel type MgFe2O4 nanocrystals (Au/MgFe2O4) which exhibit high activity for low temperature CO oxidation. Using XRD, TEM, XPS and CO titration techniques, we investigated the effect of the pretreatment atmosphere on the structure and catalytic properties of the Au/MgFe2O4 catalyst in CO oxidation. TEM, XPS and XRD showed that the pretreatment atmosphere had a negligible effect on the particle size distribution, chemical states of the gold, and the structure of the support. Among the various pretreated catalysts, O2-Au/MgFe2O4 exhibits superior activity, indicating that pretreatment in oxidative atmosphere induced the high capability of the catalyst to activate CO and supply active oxygen for CO oxidation as confirmed by CO titration experiments.
Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (109 K)Download as PowerPoint slideResearch highlights▶ We present the study on the catalytic performance of the gold catalysts with complex oxide of MgFe2O4 as support which exhibits high activity for low temperature CO oxidation. ▶ Using various techniques, we studied the effect of different pretreatments on the structure of the catalyst, the metal–support interaction and the resulting activities for CO oxidation. ▶ The application of complex oxide of MgFe2O4 as supports may open up a new route in search for highly active gold catalyst for CO oxidation.
