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- W3119581275 endingPage "119874" @default.
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- W3119581275 abstract "Pd/SSZ-13 samples with the same Pd loading (1 wt.%) but different Si/Al ratio (6 and 13) were hydrothermally aged at 800, 850, and 900 ºC, respectively. The Pd/SSZ-13 with a lower Si/Al ratio suffers a more severe deactivation. The Pd/SSZ-13 with a Si/Al ratio of 6 experiences structural damage due to dealumination, while the structure of the sample with a Si/Al ratio of 13 remains intact. The agglomeration of Pd2+ ions to large PdO particles on the external surface of zeolite causes the deactivation. The Pd cations are mobile during aging. Besides dealumination, the Pd2+ ions might be hydrolyzed and have a high mobility, which also results in the Pd2+ ions agglomeration. The severe dealumination causes the deactivation after aging at 900 ºC. However, the Pd mobility might be the primary reason for the decline of NO adsorption capacity of Pd/SSZ-13 after aging at 800 and 850 °C." @default.
- W3119581275 created "2021-01-18" @default.
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- W3119581275 date "2021-06-01" @default.
- W3119581275 modified "2023-09-26" @default.
- W3119581275 title "Insight into hydrothermal aging effect on deactivation of Pd/SSZ-13 as low-temperature NO adsorption catalyst: Effect of dealumination and Pd mobility" @default.
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- W3119581275 doi "https://doi.org/10.1016/j.apcatb.2020.119874" @default.
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