| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 40788 | Applied Catalysis A: General | 2012 | 8 Pages |
The CuO/CeO2 system was investigated as a catalyst for preferential CO oxidation reaction in hydrogen-rich feed (PROX-CO). The catalysts were prepared by deposition–precipitation (DEP) and co-precipitation (COP) methods and the catalytic performance reveals that the preparation method influences the properties of solids prepared, where a direct consequence is the difference in behavior of the catalysts in the PROX-CO reaction. A high specific area and a better dispersion of the metallic phase were obtained in the catalyst prepared by co-precipitation. The redox properties during the reaction were reported by measures of temperature programmed reduction (TPR), OSC measurements and X-ray absorption near edge structure (XANES-TPR) in situ showed the relationship between the preparation method, the physico-chemical characteristics and redox properties in the PROX-CO reaction. By this means, the good dispersion of CuO and the best oxygen capacity are the response of the high performance of CuO/CeO2-COP catalysts for the PROX-CO reaction.
Graphical abstract.Figure optionsDownload full-size imageDownload high-quality image (140 K)Download as PowerPoint slideHighlights► CuO/CeO2 catalysts for PROX-CO. ► Redox properties were studied by H2-TPR-XANES and PROX-CO-XANES. ► Catalysts prepared by hydrothermal methods showed better performance. ► Lower temperatures are favorable for PROX-CO performance.
