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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.chemmater.2c01951
|2 doi
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|a eng
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|a Pinos-Vélez, Verónica
|e verfasserin
|4 aut
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|a Insights into Palladium Deactivation during Advanced Oxidation Processes
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|c 2022
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 02.12.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 American Chemical Society.
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|a A key step in creating efficient and long-lasting catalysts is understanding their deactivation mechanism(s). On this basis, the behavior of a series of Pd/corundum materials during several hydrogen adsorption/desorption cycles was studied using temperature-programmed desorption coupled with mass spectrometry and aberration-corrected transmission electron microscopy. The materials, prepared by impregnation and by sputtering, presented uniform well-dispersed Pd nanoparticles. In addition, single atoms and small clusters of Pd were only detected in the materials prepared by impregnation. Upon exposure to hydrogen, the Pd nanoparticles smaller than 2 nm and the single atoms did not present any change, while the larger ones presented a core-shell morphology, where the core was Pd and the shell was PdH x . The results suggest that the long-term activity of the materials prepared by impregnation can be attributed solely to the presence of small clusters and single atoms of Pd
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|a Journal Article
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|a Osegueda, Oscar
|e verfasserin
|4 aut
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|a Crivoi, Dana Georgiana
|e verfasserin
|4 aut
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|a Llorca, Jordi
|e verfasserin
|4 aut
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|a García-García, F Javier
|e verfasserin
|4 aut
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|a Álvarez, Mayra G
|e verfasserin
|4 aut
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|a Medina, Francesc
|e verfasserin
|4 aut
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|a Dafinov, Anton
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Chemistry of materials : a publication of the American Chemical Society
|d 1998
|g 34(2022), 19 vom: 11. Okt., Seite 8760-8768
|w (DE-627)NLM098194763
|x 0897-4756
|7 nnns
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| 773 |
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|g volume:34
|g year:2022
|g number:19
|g day:11
|g month:10
|g pages:8760-8768
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|u http://dx.doi.org/10.1021/acs.chemmater.2c01951
|3 Volltext
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