| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 50224 | Catalysis Communications | 2011 | 4 Pages |
Au/CeO2 catalyst was prepared via a deposition–precipitation method and further pretreated in different atmospheres prior to CO oxidation. A reductive atmosphere pretreatment slightly improved the low-temperature activity of Au/CeO2. The greatest activity was achieved when Au/CeO2 catalyst was subjected to an oxidative atmosphere followed by a reductive atmosphere pretreatment. Analysis using XRD, TEM and nitrogen sorption measurement showed that pretreatment retains the crystal phase, morphology and pore structure of CeO2. However, there was a change in the interaction between gold species and CeO2 support, as revealed by H2-TPR measurement.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► Pretreatment atmospheres can affect the activity of Au/CeO2 catalysts. ► The catalyst pretreated under an oxidative atmosphere achieved a greatest activity. ► Reductive atmosphere pretreatment slightly improved the low temperature activity. ► The interaction of Au and support CeO2 was demonstrated by H2-TPR.
