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Low-temperature activity for CO oxidation over diesel oxidation catalysts studied by High Throughput Screening and DRIFT spectroscopy |
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| Authors: | Becker Elin Thormählen Peter Maunula Teuvo Suopanki Aslak Skoglundh Magnus |
| Affiliation: | 1.Competence Centre for Catalysis, Chalmers University of Technology, SE-412 96, G?teborg, Sweden ;2.Ecocat Oy, Product development, FIN-90 650, Oulu, Finland ; |
| Abstract: | We have investigated the low-temperature activity for CO oxidation for a series of platinum catalysts supported on Al2O3, TiO2, ZSM-5, CeO2 and ZrO2-CeO2. The results show major differences in activity, due to the support for Pt, especially in the presence of water. Improved activity over ceria containing samples in presence of water is likely due to the water-gas shift (WGS) reaction. Studies with in situ IR spectroscopy suggest a surface formate mechanism for the WGS reaction on Pt/CeO2. |
| Keywords: | CO oxidation diesel oxidation catalysts Pt/CeO2 water-gas shift formate |
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