Abstract
The oxidation of methane over zirconia-supported Pd, Ir, and Pt catalysts at low temperatures under an oxidizing atmosphere and the effect of SO2 on this reaction were investigated. An Ir–Pt/ZrO2 catalyst exhibited high activity and low deactivation by SO2. Characterization of the catalyst indicated the presence of a highly oxidized Pt species that was stabilized by the addition of Ir.
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Acknowledgments
The author wishes to thank Dr. T. Hirano (Catalyst Research Inc.) for his help and advice. The author is indebted to Mr. A. Hirayama for adsorption measurements and Mr. M. Mimii for activity measurements. The XAFS measurements were carried out by the Measurement Service, which is operated by the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No.2008B2152, 2008B2170). The author is indebted to Dr. T. Homma, Dr. H. Oji, and Dr. H. Ofuchi (JASRI) for obtaining the XAFS spectra.
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Ohtsuka, H. The Oxidation of Methane at Low Temperatures Over Zirconia-Supported Pd, Ir and Pt Catalysts and Deactivation by Sulfur Poisoning. Catal Lett 141, 413–419 (2011). https://doi.org/10.1007/s10562-010-0506-x
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DOI: https://doi.org/10.1007/s10562-010-0506-x