Effect of Enhanced Support Acidity on the Sulfate Storage and the Activity of Pt/γ-Al2O3 for NO Oxidation and Propylene Oxidation
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NO oxidation and propylene oxidation were studied on standard and acidity-enhanced Pt/Al2O3 catalyst. Deactivation by platinum oxide formation was suppressed by the presence of chlorine and sulfates. After a long SO2 exposure, the activity of modified catalysts was higher than the standard catalyst. The aged chlorinated sample showed the best propylene oxidation activity while the sulfated one exhibited the best NO conversion.
KeywordsHysteresis Chlorinated catalyst Desulfation Ageing Deactivation DOC Promotion TPR
The funding from the Swedish Foundation for Strategic Research (F06-0006) and Swedish Energy agency is acknowledged. This work was carried out at the Competence Centre for Catalysis, Chalmers University of Technology. KCK is financially supported by Chalmers University of Technology, the Swedish Energy Agency and the member companies: AB Volvo, Volvo Car Corporation, Scania CV AB, Haldor Topsoe A/S and ECAPS AB.
- 19.Yazawa Y, Yoshida H, Takagi N, Kagi N, Komai S, Satsuma A, Murakami Y, Hattori T (2000) In: Avelino Corma FVMSM, José Luis GF (eds) Studies in surface science and catalysis. Elsevier, Amsterdam, pp 2189–2194Google Scholar
- 30.Auvray X, Olsson L (2013) Ind Eng Chem Res. Accepted articleGoogle Scholar