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CO2 effect on activity and stability of NOx storage reduction catalysts |
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| Authors: | Basile F. Gambatesa A. Fornasari G. Livi M. Vaccari A. |
| Affiliation: | (1) Dipartimento di Chimica Industriale e dei Materiali, Alma Mater Studiorium, Università di Bologna, Viale del Risorgimento 4, Bologna, 40136, Italy;(2) INCA, VIA Delle Industrie 21/3, 30175 Marghera, Venezia, Italy |
| Abstract: | A catalyst for NOx storage/reduction was prepared to improve the activity of Ba–Pt/γ-Al2O3 by replacing Ba with a mixture of Ba and Mg. The catalyst was prepared by impregnating Pt and then co-impregnating Ba and Mg (Mg:Ba molar ratio = 1) on commercial γ-Al2O3. The tests have been carried out in the presence of CO2 at temperatures between 200 and 400 °C in order to understand the role of both the feed and various alkaline-earth metals. The storage capacity of the two catalysts was different like the mechanism in the reduction process. |
| Keywords: | NOx storage/reduction alkaline earth metal Pt CO2 NH3 |
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