The partial oxidation of methane was studied on Pt/Al2O3, Pt/ZrO2, Pt/CeO2 and Pt/Y2O3 catalysts. For Pt/Al2O3, Pt/ZrO2 and Pt/CeO2, temperature programmed surface reaction (TPSR) studies showed partial oxidation of methane comprehends two steps: combustion of methane followed by CO2, and steam reforming of unreacted methane, while for Pt/Y2O3 a direct mechanism was observed. Oxygen Storage Capacity (OSC) evaluated the reducibility and oxygen transfer capacity of the catalysts. Pt/CeO2 catalyst showed the highest stability on partial oxidation. The results were explained by the higher reducibility and oxygen storage/release capacity which allowed a continuous removal of carbonaceous deposits from the active sites, favoring the stability of the catalyst, For Pt/Al2O3 and Pt/ZrO2 catalysts the increase of carbon deposits around or near the metal particle inhibits the CO2 dissociation on CO2 reforming of methane. Pt/Y2O3 was active and stable for partial oxidation of methane, and its behavior was explained by a change in the reaction mechanism.
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31 July 2020
The Publisher has retracted this article by Passos et al. [1]. Owing to a technical error Passos et al. (2006) [2] was republished in the same journal creating a duplicate publication [1]. The Publisher apologises to the authors and to readers for this error. All authors agree with this retraction.
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Passos, F.B., Oliveira, E.R., Mattos, L.V. et al. RETRACTED ARTICLE: Effect of the support on the mechanism of partial oxidation of methane on platinum catalysts. Catal Lett 110, 261–267 (2006). https://doi.org/10.1007/s10562-006-0119-6
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DOI: https://doi.org/10.1007/s10562-006-0119-6