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Single-Atom Alloy Pd1Ag10/CeO2–ZrO2 as a Promising Catalyst for Selective Alkyne Hydrogenationстатья
- Авторы: Markov P.V., Bragina G.O., Smirnova N.S., Baeva G.N., Mashkovsky I.S., Gerasimov E.Y., Bukhtiyarov A.V., Zubavichus Y.V., Stakheev A.Y.
- Журнал: INORGANICS
- Том: 11
- Номер: 4
- Год издания: 2023
- Издательство: Molecular Diversity Preservation International (MDPI)
- Местоположение издательства: Basel, Switzerland
- Номер статьи: 150
- DOI: 10.3390/inorganics11040150
- Аннотация: The effect of support on the performance of Pd1Ag10/Al2O3 and Pd1Ag10/CeO2–ZrO2 catalysts in the selective hydrogenation of diphenylacetylene (DPA) was studied. Characterization of the catalyst by DRIFTS-CO and HRTEM revealed the formation of a PdAg single-atom alloy (SAA) structure on the surface of PdAg nanoparticles, with Pd1 sites isolated by Ag atoms. It was found that the use of CeO2–ZrO2 as a carrier makes it possible to increase the activity of the Pd1Ag10 catalyst by a factor of three without loss of selectivity compared to the reference Pd1Ag10/Al2O3. According to the HRTEM data, this catalytic behavior can be explained by an increase in the dispersion of Pd1Ag10/CeO2–ZrO2 compared to its Pd1Ag10/Al2O3 counterpart. As evidenced by DRIFTS-CO data, the high selectivity of the Pd1Ag10/CeO2–ZrO2 sample presumably stems from the stability of the structure of isolated Pd1 sites on the surface of SAA Pd1Ag10/CeO2–ZrO2.
- Добавил в систему: Стахеев Александр Юрьевич