Abstract
Sulphate formation, occurring preferentially at the CuO/CeOx–ZrOx interface, is responsible for the deactivation of low temperature CO oxidation catalysts. XRD, FTIR and isotope exchange experiments, as well as DFT calculations, reveal the poisoning mechanism of sulphate formation on the CeOx/ZrOx support material.
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Acknowledgements
JS, DM, TV and CHFP gratefully acknowledge the U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Program for the support of their participation in this work. Their studies were performed in the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOE’s Office of Biological and Environmental Research, and located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the U.S. DOE by Battelle under contract Number DE-AC05-76RL01830.
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Szanyi, J., Mei, D., Varga, T. et al. Where Does the Sulphur Go? Deactivation of a Low Temperature CO Oxidation Catalyst by Sulphur Poisoning. Catal Lett 148, 1445–1450 (2018). https://doi.org/10.1007/s10562-018-2343-2
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DOI: https://doi.org/10.1007/s10562-018-2343-2